dock[11], rock[11], duck[10], ruck[10], cord[8], kord[8], doku[8], cour[8], krud[7], kudu[7], urdu[4],
kor[7], duc[6], kur[6], rod[4], duo[4], dur[3],
do[3], od[3], du[2], ud[2], ur[2],
