bbb bbe bbk bbn bbo be- beb bee bek ben beo bez bjj bjk bjn bkb bke bkk bkn bko bnb bne bnj bnk bnn bno bnz bob boe boj bok bon boo boz bze bzn bzo bzz ebb ebe ebj ebk ebn ebo eeb eee eek een eeo ejo ekb eke eko en- enb ene enk enn eno enz eo- eob eoe eok eon eoo eze ezo ezz j-z jbj jbk jbo jbz jeb jee jej jek jen jeo jez jjb jjj jjk jkb jkk jkn jko jne jnj jnn jno job joe joj jok jon joo k-z kbb kbe kbk kbn kbo kbz ke- keb kee kek ken keo kez kjb kje kkb kke kkk kkn kn- kne knk knn kno kob koe kok kon koo koz kzo nbb nbe nbk nbn nbo ne- neb nee nej nek nen neo nez nje njk njn nke nkj nkk nkn nko nnb nne nnk nnn nno nnz no- nob noe noj nok non noo noz nzb nze nzo nzz ob- obb obe obj obk obn obo oeb oee oen oeo ojb oje ojo okb oke okj okk oko on- onb one onj onk onn ono oo- oob ook oon ooo oze ozo ozz zbb zeb zee zek zen zeo zez zje zne znn zno zo- zob zoe zok zon zoo zzz