-ji a-a a-b a-i aaa aab aai aaj aak aao aas ab- aba abb abi abj abk abo abs ai- aia aib aii aik aio ais aja ajb aji ajj ajk ajo ajs aka akb aki akj akk ako aks aoa aob aoi aoj aok aoo aos as- asa asb asi asj ask aso ass baa bab bai baj bak bao bas bba bbb bbi bbk bbo bbs bi- bia bib bii bij bik bio bis bja bji bjj bjk bjs bka bkb bkk bko bks boa bob boi boj bok boo bos bsa bsb bsi bsj bsk bso bss ia- iaa iab iai iao ias iba ibb ibi ibj ibk ibo ibs iia iib iii iij iio iis ija ijb iji ijk ijo ijs ika ikb iki ikk iko iks io- ioa iob ioi ioj ioo ios is- isa isb isi isj isk iso iss j-i jaa jab jai jaj jak jao jas jba jbi jbj jbk jbo jbs jia jib jii jij jio jis jja jjb jjj jjk jjs jka jkb jkk jko jks joa job joi joj jok joo jos jsa jsb jsi jsj jsk jso jss ka- kaa kab kai kaj kak kao kas kba kbb kbi kbk kbo kbs kia kib kii kij kik kio kis kjb kji kjs kkb kki kkk kks koa kob koi kok koo kos ksa ksb ksi ksk kso kss o-i oaa oab oai oaj oak oao oas ob- oba obb obi obj obk obo obs oia oib oii oik oio ois oja ojb oji ojo ojs oka okb oki okj okk oko oks oo- ooa oob ooi ook ooo oos os- osa osb osi osj osk oso oss saa sab sai saj sak sao sas sba sbb sbi sbj sbk sbo sbs sia sib sii sij sik sio sis sja sjb sji sjj sjk sjs sk- ska skb ski skj skk sko sks soa sob soi soj sok soo sos ss- ssa ssb ssi ssj ssk sso sss