a-a a-b a-t aaa aab aaj aao aas aat ab- aba abb abj abo abs abt aja ajb ajj ajo ajs ajt aoa aob aoj aoo aos aot as- asa asb asj aso ass ast at- ata atb ato ats att baa bab baj bao bas bat bba bbb bbo bbs bbt bja bjj bjs bjt boa bob boj boo bos bot bsa bsb bsj bso bss bst bta btb bto bts btt jaa jab jaj jao jas jat jba jbj jbo jbs jbt jja jjb jjj jjs joa job joj joo jos jot jsa jsb jsj jso jss jst jta jtb jts jtt oaa oab oaj oao oas oat ob- oba obb obj obo obs obt oja ojb ojo ojs oo- ooa oob ooo oos oot os- osa osb osj oso oss ost ot- ota otb oto ots ott saa sab saj sao sas sat sba sbb sbj sbo sbs sbt sja sjb sjj sjs sjt soa sob soj soo sos sot ss- ssa ssb ssj sso sss sst sta stb stj sto sts stt taa tab taj tao tas tat tba tbb tbj tbo tbs tbt tjo tjs to- toa tob toj too tos tot tsa tsb tsj tso tss tst tta ttb tto tts ttt