That would be DmpafyafsW . That is, you have to extend the two-leg part of the Griffon (yafsW) by prefixing an extra step that can both move and hop (mp) so that it effectively jumps. (mpafW would just be a cumbersome notation for D, glueing two colinear W steps together, but here you are forced to base the move on W/F because in the final leg you want to make single steps.)
That would be DmpafyafsW . That is, you have to extend the two-leg part of the Griffon (yafsW) by prefixing an extra step that can both move and hop (mp) so that it effectively jumps. (mpafW would just be a cumbersome notation for D, glueing two colinear W steps together, but here you are forced to base the move on W/F because in the final leg you want to make single steps.)