duce[8], ceru[7], rude[7], durr[7], cedr[6], cred[6], dedr[6], dred[6],
cud[7], dud[7], ecu[6], edu[6], ued[6], cru[6], dur[6], rud[6], urd[6], rur[5], cer[4], der[4], red[4], drr[4],
ud[5], ce[3], de[3], er[2], re[2],
