a-a a-b a-i aaa aab aad aaf aah aai aas ab- aba abb abd abf abh abi abs ad- ada adb add adf adh adi ads af- afa afb afd aff afh afi afs aha ahb ahd ahf ahh ahi ahs ai- aia aib aid aif aih aii ais as- asa asb asd asf ash asi ass baa bab bad baf bah bai bas bba bbb bbd bbf bbh bbi bbs bda bdb bdd bdf bdh bdi bds bfa bfb bfd bff bfh bfi bfs bha bhb bhd bhf bhh bhi bhs bi- bia bib bid bif bih bii bis bsa bsb bsd bsf bsh bsi bss daa dab dad daf dah dai das dba dbb dbd dbf dbh dbi dbs dda ddb ddd ddf ddh ddi dds dfa dfb dfd dff dfh dfi dfs dh- dha dhb dhd dhf dhh dhi dhs di- dia dib did dif dih dii dis dsa dsb dsd dsf dsh dsi dss faa fab fad faf fah fai fas fba fbb fbd fbf fbh fbi fbs fda fdb fdd fdf fdh fdi fds ffa ffd fff ffh ffi ffs fha fhb fhf fhh fhi fhs fia fib fid fif fih fii fis fsa fsb fsd fsf fsh fsi fss h-i haa hab had haf hah hai has hba hbb hbd hbf hbh hbi hbs hda hdb hdd hdf hdh hdi hds hfa hfb hfd hff hfh hfi hfs hha hhb hhd hhf hhh hhi hhs hia hib hid hif hih hii his hsa hsb hsd hsf hsh hsi hss i-d i-f ia- iaa iab iad iaf iah iai ias iba ibb ibd ibf ibh ibi ibs ida idb idd idf idh idi ids ifa ifb ifd iff ifi ifs iha ihb ihd ihf ihh ihi ihs iia iib iid iif iih iii iis is- isa isb isd isf ish isi iss saa sab sad saf sah sai sas sba sbb sbd sbf sbh sbi sbs sda sdb sdd sdf sdh sdi sds sfa sfb sfd sff sfh sfi sfs sh- sha shb shd shf shh shi shs sia sib sid sif sih sii sis ss- ssa ssb ssd ssf ssh ssi sss