-al -ol a-a a-b aaa aab aad aaf aah aal aao aas ab- aba abb abd abf abh abl abo abs ad- ada adb add adf adh adl ado ads af- afa afb afd aff afh afl afo afs aha ahb ahd ahf ahh ahl aho ahs al- ala alb ald alf alh all alo als aoa aob aod aof aoh aol aoo aos as- asa asb asd asf ash asl aso ass baa bab bad baf bah bal bao bas bba bbb bbd bbf bbh bbl bbo bbs bda bdb bdd bdf bdh bdl bdo bds bfa bfb bfd bff bfh bfl bfo bfs bha bhb bhd bhf bhh bhl bho bhs bla blb bld blf blh bll blo bls boa bob bod bof boh bol boo bos bsa bsb bsd bsf bsh bsl bso bss daa dab dad daf dah dal dao das dba dbb dbd dbf dbh dbl dbo dbs dda ddb ddd ddf ddh ddl ddo dds dfa dfb dfd dff dfh dfl dfo dfs dh- dha dhb dhd dhf dhh dhl dho dhs dl- dla dlb dld dlf dlh dll dlo dls doa dob dod dof doh dol doo dos dsa dsb dsd dsf dsh dsl dso dss faa fab fad faf fah fal fao fas fba fbb fbd fbf fbh fbl fbo fbs fda fdb fdd fdf fdh fdl fdo fds ffa ffd fff ffh ffl ffo ffs fha fhb fhf fhh fhl fho fhs fla flb fld flf fll flo fls foa fob fof foh fol foo fos fsa fsb fsd fsf fsh fsl fso fss haa hab had haf hah hal hao has hba hbb hbd hbf hbh hbl hbo hbs hda hdb hdd hdf hdh hdl hdo hds hfa hfb hfd hff hfh hfl hfo hfs hha hhb hhd hhf hhh hhl hho hhs hla hlb hld hlf hlh hll hlo hls hoa hob hod hof hoh hol hoo hos hsa hsb hsd hsf hsh hsl hss la- laa lab lad laf lah lal lao las lba lbb lbd lbf lbh lbl lbo lbs lda ldb ldd ldf ldh ldl ldo lds lfa lfb lfd lff lfh lfl lfo lfs lha lhb lhd lhf lhh lho lhs lla llb lld llf lll llo lls loa lob lod lof loh lol loo los lsa lsb lsd lsf lsh lsl lso lss oaa oab oad oaf oah oal oao oas ob- oba obb obd obf obh obl obo obs oda odb odd odf odh odl odo ods of- ofa ofb ofd off ofl ofo ofs oha ohd ohf ohh ohl oho ohs ola olb old olf oll olo ols oo- ooa oob ood oof ooh ool ooo oos os- osa osb osd osf osh osl oso oss saa sab sad saf sah sal sao sas sba sbb sbd sbf sbh sbl sbo sbs sda sdb sdd sdf sdh sdl sdo sds sfa sfb sfd sff sfh sfl sfo sfs sh- sha shb shd shf shh shl sho shs sla slb sld slf slh sll slo sls soa sob sod sof soh sol soo sos ss- ssa ssb ssd ssf ssh ssl sso sss