a-a a-b a-c a-t aaa aab aac aae aaj aas aat ab- aba abb abc abe abj abs abt ac- aca acb acc ace acj acs act aea aeb aec aee aej aes aet aja ajb ajc aje ajj ajs ajt as- asa asb asc ase asj ass ast at- ata atb atc ate ats att baa bab bac bae baj bas bat bba bbb bbc bbe bbs bbt bca bcb bcc bce bcj bcs bct be- bea beb bec bee bes bet bja bjc bjj bjs bjt bsa bsb bsc bse bsj bss bst bta btb btc bte bts btt c-- c-j caa cab cac cae caj cas cat cba cbb cbc cbe cbj cbs cbt cca ccb ccc cce ccj ccs cct ce- cea ceb cec cee cej ces cet cja cjb cjc cjs csa csb csc cse csj css cst cta ctb ctc cte cts ctt eaa eab eac eae eaj eas eat eba ebb ebc ebe ebj ebs ebt ec- eca ecb ecc ece ecj ecs ect eea eeb eec eee ees eet eja ejc ejt es- esa esb esc ese ess est eta etb etc ete etj ets ett jaa jab jac jae jaj jas jat jba jbc jbj jbs jbt jca jcb jcc jce jcs jct jea jeb jec jee jej jes jet jja jjb jjc jjj jjs jsa jsb jsc jse jsj jss jst jta jtb jtc jte jts jtt saa sab sac sae saj sas sat sba sbb sbc sbe sbj sbs sbt sca scb scc sce scj scs sct se- sea seb sec see sej ses set sja sjb sjc sje sjj sjs sjt ss- ssa ssb ssc sse ssj sss sst sta stb stc ste stj sts stt taa tab tac tae taj tas tat tba tbb tbc tbe tbj tbs tbt tca tcb tcc tce tcj tcs tct te- tea teb tec tee tej tes tet tjc tje tjs tsa tsb tsc tse tsj tss tst tta ttb ttc tte tts ttt