a-a a-b a-i aaa aab aad aah aai aao aap aar aas ab- aba abb abd abh abi abo abp abr abs ad- ada adb add adh adi ado adp adr ads aha ahb ahd ahh ahi aho ahp ahr ahs ai- aia aib aid aih aii aio aip air ais aoa aob aod aoh aoi aoo aop aor aos ap- apa apb apd aph api apo app apr aps ar- ara arb ard arh ari aro arp arr ars as- asa asb asd ash asi aso asp asr ass b-p baa bab bad bah bai bao bap bar bas bba bbb bbd bbh bbi bbo bbp bbr bbs bda bdb bdd bdh bdi bdo bdp bdr bds bha bhb bhd bhh bhi bho bhp bhr bhs bi- bia bib bid bih bii bio bip bir bis boa bob bod boh boi boo bop bor bos bpa bpb bpd bph bpi bpo bpp bpr bps bra brb brd brh bri bro brp brr brs bsa bsb bsd bsh bsi bso bsp bsr bss daa dab dad dah dai dao dap dar das dba dbb dbd dbh dbi dbo dbp dbr dbs dda ddb ddd ddh ddi ddo ddp ddr dds dh- dha dhb dhd dhh dhi dho dhp dhr dhs di- dia dib did dih dii dio dip dir dis doa dob dod doh doi doo dop dor dos dpa dpb dpd dph dpi dpo dpp dpr dps dra drb drd dri dro drp drr drs dsa dsb dsd dsh dsi dso dsp dsr dss h-i haa hab had hah hai hao hap har has hba hbb hbd hbh hbi hbo hbp hbr hbs hda hdb hdd hdh hdi hdo hdp hdr hds hha hhb hhd hhh hhi hho hhp hhr hhs hia hib hid hih hii hio hip hir his hoa hob hod hoh hoi hoo hop hor hos hpa hpb hpd hph hpi hpo hpp hpr hps hr- hra hrb hrd hrh hri hro hrp hrr hrs hsa hsb hsd hsh hsi hsp hsr hss i-d ia- iaa iab iad iah iai iao iap iar ias iba ibb ibd ibh ibi ibo ibp ibr ibs ida idb idd idh idi ido idp idr ids iha ihb ihd ihh ihi iho ihp ihr ihs iia iib iid iih iii iio iip iir iis io- ioa iob iod ioh ioi ioo iop ior ios ipa ipb ipd ipi ipo ipp ipr ips ir- ira irb ird iri iro irp irr irs is- isa isb isd ish isi iso isp isr iss o-i oaa oab oad oah oai oao oap oar oas ob- oba obb obd obh obi obo obp obr obs oda odb odd odh odi odo odp odr ods oha ohd ohh ohi oho ohp ohr ohs oia oib oid oii oio oip oir ois oo- ooa oob ood ooh ooi ooo oop oor oos op- opa opb opd oph opi opo opp opr ops or- ora orb ord orh ori oro orp orr ors os- osa osb osd osh osi oso osp osr oss p-p paa pab pad pah pai pao pap par pas pba pbb pbd pbi pbo pbp pbr pbs pda pdb pdd pdh pdi pdo pdp pdr pds pha phb phd phi pho php phr phs pia pib pid pih pii pio pip pir pis poa pob pod poh poi poo pop por pos ppa ppb ppd pph ppi ppo ppp ppr pps pra prb prd prh pri pro prp prr prs ps- psa psb psd psh psi pso psp psr pss ra- raa rab rad rah rai rao rap rar ras rba rbb rbd rbh rbi rbo rbp rbr rbs rda rdb rdd rdh rdi rdo rdp rdr rds rh- rha rhb rhd rhh rhi rho rhp rhr rhs ria rib rid rih rii rio rip rir ris roa rob rod roh roi roo rop ror ros rpa rpb rpd rph rpi rpo rpp rpr rps rra rrb rrd rrh rri rrp rrr rrs rsa rsb rsd rsh rsi rso rsp rsr rss saa sab sad sah sai sao sap sar sas sba sbb sbd sbh sbi sbo sbp sbr sbs sda sdb sdd sdh sdi sdo sdp sdr sds sh- sha shb shd shh shi sho shp shr shs sia sib sid sih sii sio sip sir sis soa sob sod soh soi soo sop sor sos spa spb spd sph spi spo spp spr sps sr- sra srb srd srh sri sro srp srr srs ss- ssa ssb ssd ssh ssi sso ssp ssr sss