a-a a-b a-i a-q aaa aab aad aai aaq aas ab- aba abb abd abi abq abs ad- ada adb add adi adq ads ai- aia aib aid aii aiq ais aqa aqi aqs as- asa asb asd asi asq ass baa bab bad bai baq bas bba bbb bbd bbi bbq bbs bda bdb bdd bdi bdq bds bi- bia bib bid bii bis bqd bsa bsb bsd bsi bss daa dab dad dai daq das dba dbb dbd dbi dbq dbs dda ddb ddd ddi ddq dds di- dia dib did dii diq dis dqa dqs dsa dsb dsd dsi dsq dss i-d ia- iaa iab iad iai iaq ias iba ibb ibd ibi ibs ida idb idd idi idq ids iia iib iid iii iis iqa iqd iqs is- isa isb isd isi isq iss qaa qad qas qba qbd qbq qbs qda qdb qds qid qis qqq qsa qsd qsi saa sab sad sai saq sas sba sbb sbd sbi sbq sbs sda sdb sdd sdi sdq sds sia sib sid sii siq sis sqa sqd sqi sqq sqs ss- ssa ssb ssd ssi ssq sss