a-a a-b a-t aaa aab aaj aas aat ab- aba abb abj abs abt aja ajb ajj ajs ajt as- asa asb asj ass ast at- ata atb ats att baa bab baj bas bat bba bbb bbs bbt bja bjj bjs bjt bsa bsb bsj bss bst bta btb bts btt jaa jab jaj jas jat jba jbj jbs jbt jja jjb jjj jjs jsa jsb jsj jss jst jta jtb jts jtt saa sab saj sas sat sba sbb sbj sbs sbt sja sjb sjj sjs sjt ss- ssa ssb ssj sss sst sta stb stj sts stt taa tab taj tas tat tba tbb tbj tbs tbt tjs tsa tsb tsj tss tst tta ttb tts ttt