pull[9], plus[8], puls[8], slup[8], spul[8], dups[7], spur[7], urdu[4],
pul[7], pud[6], pur[6], ups[6], lud[4], lus[4], dur[3], sud[3], uds[3], rus[3], sur[3], urs[3],
ul[3], du[2], ud[2], ur[2],
