VATYFILM

this one can locate s2-s7 for 1im3
{KREQDNS}-X-X-{KREQDNS}-X(10,35)-[KREQDNS]-X-X-[YFW]-X(1,5)-[LVAT]-X-[LVFIM]-x(1,25)-[YVFIL]-X-[CFWP]-X-[VAM]

then I combine the last five position to:
[VATYFILM]-X-[CFWP]-X-[VATYFILM]
which can locate two strands of four strands in interlock.