a-a a-b a-i a-z aaa aab aai aam aar aaz ab- aba abb abi abm abr abz ai- aia aib aii aim air aiz ama amb ami amm amr amz ar- ara arb ari arm arr arz az- aza azb azi azm azz baa bab bai bam bar baz bba bbb bbi bbm bbr bi- bia bib bii bim bir biz bma bmb bmi bmm bmr bmz bra brb bri brm brr brz bza bzr bzz ia- iaa iab iai iam iar iaz iba ibb ibi ibm ibr ibz iia iib iii iim iir im- ima imb imi imm imz ir- ira irb iri irm irr iza izi izm izz m-r maa mab mai mam mar maz mba mbb mbi mbm mbr mi- mia mib mii mim mir miz mma mmb mmi mmm mmr mmz mra mrb mri mrm mrr mrz mza mzb mzi mzm ra- raa rab rai ram rar raz rba rbb rbi rbm rbr ria rib rii rim rir riz rma rmb rmi rmm rmr rra rrb rri rrm rrr rza rzb rzm zaa zab zai zam zar zaz zbb zbm zbr zia zib zim zir ziz zma zmb zmm zzr zzz