a-a a-b a-q aaa aab aad aao aaq aas aau aav ab- aba abb abd abo abq abs abu abv ad- ada adb add ado adq ads adu adv aoa aob aod aoo aos aou aov aqa aqo aqs as- asa asb asd aso asq ass asu asv au- aua aub aud auo aus auv av- ava avb avd avo avq avs avu b-u baa bab bad bao baq bas bau bav bba bbb bbd bbo bbq bbs bbu bda bdb bdd bdo bdq bds bdu bdv boa bob bod boo boq bos bou bov bqd bsa bsb bsd bso bss bsu bsv bua bub bud buo bus buu bva bvb bvd bvo bvs bvu bvv daa dab dad dao daq das dau dav dba dbb dbd dbo dbq dbs dbu dbv dda ddb ddd ddo ddq dds ddu doa dob dod doo doq dos dou dov dqa dqs dqv dsa dsb dsd dso dsq dss dsu dsv dua dub dud duo dus duv dva dvb dvd dvs dvu oaa oab oad oao oaq oas oau oav ob- oba obb obd obo obs obu obv oda odb odd odo ods odu odv oo- ooa oob ood ooo oos oov oqb oqo os- osa osb osd oso osq oss osu osv ou- oua oud ouo ous ov- ova ovb ovd ovo ovs ovv qaa qad qas qau qba qbd qbq qbs qda qdb qds qoo qos qqq qqu qsa qsd qso qu- qua qud quo qus qv- qvd saa sab sad sao saq sas sau sav sba sbb sbd sbo sbq sbs sbu sbv sda sdb sdd sdo sdq sds sdu sdv soa sob sod soo soq sos sou sov sqa sqd sqq sqs ss- ssa ssb ssd sso ssq sss ssu ssv sua sub sud suo suq sus suu suv sva svb svd svo svq svs svu svv ua- uaa uab uad uao uaq uas uau uav uba ubb ubo ubs ubu ubv uda udb udd udo uds udu udv uoa uob uod uoo uos usa usb usd uso uss usu usv uua uus uuu uva uvb uvo uvs uvu uvv v-a vaa vab vad vao vas vau vav vba vbd vbo vbs vbv vdb vdd vdo vds vdu vdv voa vob vod voo voq vos vou vov vqa vsa vsb vsd vso vss vsu vsv vus vuv vva vvb vvo vvs vvv