form[10], cord[8], dorf[8], cour[8], mord[7], drum[6],
ufo[7], dom[6], rom[6], duc[6], ruf[6], mud[5], mur[5], rum[5], rod[4], duo[4], dur[3],
um[4], do[3], od[3], du[2], ud[2], ur[2],
