US data patches 2-depth structure


As described in the Protocol Notes the patches are stored in a 2-depth directory structure:


However, it seems like there are some cases for the US data where the “A” is missing:

US/00/2 US/00/3 US/00/4 US/00/6 US/00/7 US/00/8 US/01/2 US/01/3 US/01/4 US/01/6 US/01/7 US/01/8 US/02/2 US/02/3 US/02/4 US/02/6 US/02/7 US/02/8 US/03/2 US/03/3 US/03/4 US/03/6 US/03/7 US/03/8 US/04/2 US/04/3 US/04/4 US/04/6 US/04/7 US/04/8 US/05/2 US/05/3 US/05/6 US/05/7 US/05/8 US/06/2 US/06/3 US/06/6 US/06/7 US/06/8 US/07/3 US/07/7 US/07/8 US/08/2 US/08/3 US/08/6 US/08/7 US/08/8 US/09/2 US/09/3 US/09/6 US/09/7 US/09/8 US/10/2 US/10/3 US/10/6 US/10/7 US/10/8 US/11/2 US/11/3 US/11/6 US/11/7 US/11/8 US/12/2 US/12/3 US/12/6 US/12/7 US/12/8 US/13/2 US/13/3 US/13/6 US/13/7 US/13/8 US/14/2 US/14/3 US/14/6 US/14/7 US/14/8 US/15/2 US/15/3 US/15/6 US/15/7 US/15/8 US/16/2 US/16/3 US/16/6 US/16/7 US/16/8 US/17/2 US/17/3 US/17/6 US/17/7 US/17/8 US/18/2 US/18/3 US/18/6 US/18/7 US/18/8 US/19/2 US/19/3 US/19/6 US/19/7 US/19/8 US/20/2 US/20/3 US/20/6 US/20/7 US/20/8 US/21/2 US/21/3 US/21/6 US/21/7 US/22/2 US/22/3 US/22/6 US/22/7 US/22/8 US/23/2 US/23/3 US/23/6 US/23/7 US/23/8 US/24/2 US/24/3 US/24/6 US/24/7 US/24/8 US/25/2 US/25/3 US/25/6 US/25/7 US/25/8 US/26/2 US/26/3 US/26/6 US/26/7 US/26/8 US/27/2 US/27/3 US/27/6 US/27/7 US/27/8 US/28/2 US/28/3 US/28/6 US/28/7 US/28/8 US/29/2 US/29/3 US/29/6 US/29/7 US/29/8 US/30/2 US/30/3 US/30/6 US/30/7 US/30/8 US/31/2 US/31/3 US/31/6 US/31/7 US/31/8 US/32/2 US/32/3 US/32/6 US/32/7 US/32/8 US/33/2 US/33/3 US/33/6 US/33/7 US/33/8 US/34/2 US/34/3 US/34/6 US/34/7 US/34/8 US/35/2 US/35/3 US/35/6 US/35/7 US/35/8 US/36/2 US/36/3 US/36/6 US/36/7 US/36/8 US/37/2 US/37/3 US/37/6 US/37/7 US/37/8 US/38/2 US/38/3 US/38/6 US/38/7 US/38/8 US/39/2 US/39/3 US/39/6 US/39/7 US/39/8 US/40/2 US/40/3 US/40/6 US/40/7 US/41/2 US/41/3 US/41/6 US/41/7 US/42/2 US/42/3 US/42/6 US/42/7 US/43/2 US/43/3 US/43/6 US/43/7 US/44/2 US/44/3 US/44/6 US/44/7 US/45/2 US/45/3 US/45/6 US/45/7 US/46/2 US/46/3 US/46/6 US/46/7 US/47/2 US/47/3 US/47/6 US/47/7 US/48/2 US/48/3 US/48/6 US/48/7 US/49/2 US/49/3 US/49/6 US/49/7 US/50/2 US/50/3 US/50/6 US/50/7 US/51/2 US/51/3 US/51/6 US/51/7 US/52/2 US/52/3 US/52/6 US/52/7 US/53/2 US/53/3 US/53/6 US/53/7 US/54/2 US/54/3 US/54/6 US/54/7 US/55/2 US/55/3 US/55/6 US/55/7 US/56/2 US/56/3 US/56/6 US/56/7 US/57/2 US/57/3 US/57/6 US/57/7 US/58/2 US/58/3 US/58/6 US/58/7 US/59/2 US/59/3 US/59/6 US/59/7 US/60/2 US/60/3 US/60/6 US/60/7 US/61/2 US/61/3 US/61/6 US/61/7 US/62/2 US/62/3 US/62/6 US/62/7 US/63/2 US/63/3 US/63/6 US/63/7 US/64/2 US/64/3 US/64/6 US/64/7 US/65/2 US/65/3 US/65/6 US/65/7 US/66/2 US/66/3 US/66/6 US/66/7 US/67/2 US/67/3 US/67/6 US/67/7 US/68/2 US/68/3 US/68/6 US/68/7 US/69/2 US/69/3 US/69/6 US/69/7 US/70/2 US/70/3 US/70/6 US/70/7 US/71/2 US/71/3 US/71/6 US/71/7 US/72/2 US/72/3 US/72/6 US/72/7 US/73/1 US/73/2 US/73/3 US/73/6 US/73/7 US/74/2 US/74/3 US/74/6 US/74/7 US/75/1 US/75/2 US/75/3 US/75/6 US/75/7 US/76/1 US/76/2 US/76/3 US/76/6 US/76/7 US/77/1 US/77/2 US/77/3 US/77/6 US/77/7 US/78/1 US/78/2 US/78/3 US/78/6 US/78/7 US/79/1 US/79/2 US/79/3 US/79/6 US/79/7 US/80/1 US/80/2 US/80/3 US/80/6 US/80/7 US/81/2 US/81/6 US/81/7 US/82/1 US/82/2 US/82/3 US/82/6 US/82/7 US/83/1 US/83/2 US/83/3 US/83/6 US/83/7 US/84/1 US/84/2 US/84/3 US/84/6 US/84/7 US/85/1 US/85/3 US/85/6 US/85/7 US/86/1 US/86/2 US/86/3 US/86/6 US/86/7 US/87/1 US/87/2 US/87/3 US/87/6 US/87/7 US/88/1 US/88/2 US/88/3 US/88/6 US/88/7 US/89/1 US/89/2 US/89/3 US/89/6 US/89/7 US/90/1 US/90/2 US/90/3 US/90/6 US/90/7 US/91/2 US/91/3 US/91/6 US/91/7 US/92/1 US/92/2 US/92/3 US/92/5 US/92/6 US/92/7 US/93/1 US/93/2 US/93/3 US/93/5 US/93/6 US/93/7 US/94/2 US/94/3 US/94/5 US/94/6 US/94/7 US/95/1 US/95/2 US/95/3 US/95/5 US/95/6 US/95/7 US/96/1 US/96/2 US/96/3 US/96/5 US/96/6 US/96/7 US/97/1 US/97/2 US/97/3 US/97/6 US/97/7 US/98/1 US/98/2 US/98/3 US/98/5 US/98/6 US/98/7 US/99/1 US/99/2 US/99/3 US/99/5 US/99/6 US/99/7

Which is not the case for the France data.

Is this normal?