dupo[8], rodu[7], rudo[7], poru[7], drop[6], rowu[6], woru[6],
dup[7], pud[7], duo[6], udo[6], opu[6], dur[6], rud[6], urd[6], dwu[6], pod[5], oru[5], odr[4], ord[4], rod[4], por[4], pro[4], rop[4], rwo[3],
ud[5], wu[4], do[3], od[3], op[3], po[3], or[2], ro[2],
