purrt[8], prust[8], spurt[8], surrt[5],
purr[7], spur[7], pust[7], sput[7], surr[4], stur[4], surt[4], urst[4],
pst[6], pur[6], ups[6], rus[3], sur[3], urs[3],
st[2], ur[2], tu[2],
