a-a a-b a-i aaa aab aad aai aam aas ab- aba abb abd abi abm abs ad- ada adb add adi adm ads ai- aia aib aid aii aim ais ama amb amd ami amm ams as- asa asb asd asi asm ass baa bab bad bai bam bas bba bbb bbd bbi bbm bbs bda bdb bdd bdi bdm bds bi- bia bib bid bii bim bis bma bmb bmd bmi bmm bms bsa bsb bsd bsi bsm bss daa dab dad dai dam das dba dbb dbd dbi dbm dbs dda ddb ddd ddi ddm dds di- dia dib did dii dim dis dma dmb dmd dmi dmm dms dsa dsb dsd dsi dsm dss i-d ia- iaa iab iad iai iam ias iba ibb ibd ibi ibm ibs ida idb idd idi idm ids iia iib iid iii iim iis im- ima imb imd imi imm ims is- isa isb isd isi ism iss maa mab mad mai mam mas mba mbb mbd mbi mbm mbs mda mdb mdd mdi mdm mds mi- mia mib mid mii mim mis mma mmb mmd mmi mmm mms msa msb msd msi msm mss saa sab sad sai sam sas sba sbb sbd sbi sbm sbs sda sdb sdd sdi sdm sds sia sib sid sii sim sis sma smb smd smi smm sms ss- ssa ssb ssd ssi ssm sss