kobo[7], obok[7], brok[7], kobr[7], korb[7], kobz[7], boro[6], robo[6], zorb[6], koro[5], okro[5], orko[5], kozo[5], korz[5],
bok[6], bor[5], rob[5], brr[5], oko[4], kor[4], kro[4], okr[4], ork[4], rok[4], oro[3], zoo[3], orz[3],
bo[4], ko[3], ok[3], or[2], ro[2], oz[2],
