daut[4], raut[4], trau[4], urat[4], urdu[4],
car[6], act[6], duc[6], cut[6], dar[3], rad[3], art[3], rat[3], dau[3], rau[3], dur[3], tau[3],
ad[2], da[2], ar[2], au[2], du[2], ud[2], ur[2], tu[2],
