udoi[7], rodu[7], rudo[7], durr[7], uroi[6], ruro[6], ooid[5], dior[5], odro[5], ordo[5],
idu[6], duo[6], udo[6], dur[6], rud[6], urd[6], rui[5], oru[5], rur[5], doi[4], ido[4], odo[4], odr[4], ord[4], rod[4], drr[4], roi[3], oro[3],
ud[5], id[3], do[3], od[3], ii[2], or[2], ro[2],