cudu[10], duru[9], urdu[9], runu[8], rund[7], durr[7],
udu[8], cud[7], dnu[6], nud[6], cru[6], dur[6], rud[6], urd[6], nur[5], run[5], urn[5], rur[5], drr[4],
uu[6], ud[5], nu[4],
