pattern for 1A

strand i,i+1
[VALM]-[TSKRQED]-[VILM]-X-C-X(8,26)-[LWMIVC]-X-W-[YLVFI]
strand k, k+1
[YFALVGI]-X-[FILM]-X-[FILM]-X(8)-[AGS]-X-Y-[YSTFH]-C