a-a a-b aaa aab aad aah aas aav ab- aba abb abd abh abs abv ad- ada adb add adh ads adv aha ahb ahd ahh ahs ahv as- asa asb asd ash ass asv av- ava avb avd avh avs baa bab bad bah bas bav bba bbb bbd bbh bbs bda bdb bdd bdh bds bdv bha bhb bhd bhh bhs bhv bsa bsb bsd bsh bss bsv bva bvb bvd bvh bvs bvv daa dab dad dah das dav dba dbb dbd dbh dbs dbv dda ddb ddd ddh dds dh- dha dhb dhd dhh dhs dsa dsb dsd dsh dss dsv dva dvb dvd dvh dvs haa hab had hah has hav hba hbb hbd hbh hbs hbv hda hdb hdd hdh hds hdv hha hhb hhd hhh hhs hhv hsa hsb hsd hsh hss hsv hv- hva hvb hvd hvs hvv saa sab sad sah sas sav sba sbb sbd sbh sbs sbv sda sdb sdd sdh sds sdv sh- sha shb shd shh shs shv ss- ssa ssb ssd ssh sss ssv sva svb svd svs svv v-a vaa vab vad vah vas vav vba vbd vbh vbs vbv vdb vdd vdh vds vdv vh- vha vhb vhd vhs vsa vsb vsd vsh vss vsv vva vvb vvs vvv