a-a a-b aaa aab aah aar aas aaw ab- aba abb abh abr abs abw aha ahb ahh ahr ahs ahw ar- ara arb arh arr ars arw as- asa asb ash asr ass asw aw- awa awb awh awr aws aww baa bab bah bar bas baw bba bbb bbh bbr bbs bbw bha bhb bhh bhr bhs bhw bra brb brh brr brs brw bsa bsb bsh bsr bss bsw bwa bwb bwh bwr bws haa hab hah har has haw hba hbb hbh hbr hbs hbw hha hhb hhh hhr hhs hhw hr- hra hrb hrh hrr hrs hrw hsa hsb hsh hsr hss hsw hw- hwa hwb hwr hws hww ra- raa rab rah rar ras raw rba rbb rbh rbr rbs rbw rh- rha rhb rhh rhr rhs rra rrb rrh rrr rrs rsa rsb rsh rsr rss rsw rwa rwb rwh rwr rws saa sab sah sar sas saw sba sbb sbh sbr sbs sbw sh- sha shb shh shr shs sr- sra srb srh srr srs srw ss- ssa ssb ssh ssr sss ssw swa swb swh swr sws waa wab wah war was waw wba wbb wbr wbs wbw wh- wha whb whh whr whs whw wr- wra wrh wrr wrs wrw wsa wsb wsh wsr wss wsw wwa www