b-u bbb bbk bbn bbo bbu bbx bjj bjk bjn bju bkb bkk bkn bko bkx bnb bnj bnk bnn bno bnu bnx bob boj bok bon boo bou box bub buj buk bun buo buu bux bxb bxj bxn bxo bxx jbj jbk jbo jbu jjb jjj jjk jju jkb jkk jkn jko jku jkx jnj jnn jno jnu job joj jok jon joo jou jub juk jun juo jxn kbb kbk kbn kbo kbu kbx kjb kju kkb kkk kkn kku kn- knk knn kno knu knx kob kok kon koo kou kub kuj kuk kun kuu kxo nbb nbk nbn nbo nbu nbx njk njn nju nkj nkk nkn nko nku nnb nnk nnn nno nnu no- nob noj nok non noo nou nox nub nuj nuk nun nuo nuu nux ob- obb obj obk obn obo obu obx ojb ojo oju okb okj okk oko oku on- onb onj onk onn ono onu onx oo- oob ook oon ooo oox ou- ouk oun ouo ox- oxb oxn oxo oxx ubb ubk ubn ubo ubu ubx ujo ukb ukk ukn uku un- unb unk unn uno unu unx uob uoj uok uon uoo uox uun uuu uxb uxo uxu xbx xjo xkb xnk xno xnu xok xon xoo xox xun xxo xxx