-ic a-a a-b a-c a-i aaa aab aac aad aah aai aak aao aap aas ab- aba abb abc abd abh abi abk abo abp abs ac- aca acb acc acd ach aci ack aco acp acs ad- ada adb adc add adh adi adk ado adp ads aha ahb ahc ahd ahh ahi ahk aho ahp ahs ai- aia aib aic aid aih aii aik aio aip ais aka akb akc akd akh aki akk ako akp aks aoa aob aoc aod aoh aoi aok aoo aop aos ap- apa apb apc apd aph api apk apo app aps as- asa asb asc asd ash asi ask aso asp ass b-p baa bab bac bad bah bai bak bao bap bas bba bbb bbc bbd bbh bbi bbk bbo bbp bbs bca bcb bcc bcd bch bci bck bco bcp bcs bda bdb bdc bdd bdh bdi bdk bdo bdp bds bha bhb bhc bhd bhh bhi bhk bho bhp bhs bi- bia bib bic bid bih bii bik bio bip bis bka bkb bkc bkk bko bkp bks boa bob boc bod boh boi bok boo bop bos bpa bpb bpc bpd bph bpi bpo bpp bps bsa bsb bsc bsd bsh bsi bsk bso bsp bss c-- caa cab cac cad cah cai cak cao cap cas cba cbb cbc cbd cbh cbi cbk cbo cbp cbs cca ccb ccc ccd cch cci cck cco ccp ccs cda cdb cdc cdd cdh cdi cdk cdo cdp cds ch- cha chb chc chd chh chi chk cho chp chs ci- cia cib cic cid cih cii cik cio cip cis cka ckb ckc ckd ckh cki cko cks co- coa cob coc cod coh coi cok coo cop cos cpa cpb cpc cpd cph cpi cpk cpo cpp cps csa csb csc csd csh csi csk cso csp css daa dab dac dad dah dai dak dao dap das dba dbb dbc dbd dbh dbi dbk dbo dbp dbs dca dcb dcc dcd dci dck dco dcp dcs dda ddb ddc ddd ddh ddi ddk ddo ddp dds dh- dha dhb dhc dhd dhh dhi dhk dho dhp dhs di- dia dib dic did dih dii dik dio dip dis dka dkb dkc dki dkk dko dkp dks doa dob doc dod doh doi dok doo dop dos dpa dpb dpc dpd dph dpi dpk dpo dpp dps dsa dsb dsc dsd dsh dsi dsk dso dsp dss h-i haa hab hac had hah hai hak hao hap has hba hbb hbc hbd hbh hbi hbk hbo hbp hbs hca hcb hcc hcd hch hci hck hco hcp hcs hda hdb hdc hdd hdh hdi hdk hdo hdp hds hha hhb hhc hhd hhh hhi hhk hho hhp hhs hia hib hic hid hih hii hik hio hip his hka hkb hkd hkh hki hkk hko hkp hks hoa hob hoc hod hoh hoi hok hoo hop hos hpa hpb hpc hpd hph hpi hpk hpo hpp hps hsa hsb hsc hsd hsh hsi hsk hsp hss i-d ia- iaa iab iac iad iah iai iao iap ias iba ibb ibc ibd ibh ibi ibk ibo ibp ibs ica icb icc icd ich ici ick ico icp ics ida idb idc idd idh idi idk ido idp ids iha ihb ihc ihd ihh ihi ihk iho ihp ihs iia iib iic iid iih iii iio iip iis ika ikb ikc iki ikk iko iks io- ioa iob ioc iod ioh ioi ioo iop ios ipa ipb ipc ipd ipi ipo ipp ips is- isa isb isc isd ish isi isk iso isp iss ka- kaa kab kac kad kah kai kak kao kap kas kba kbb kbc kbd kbh kbi kbk kbo kbp kbs kca kcb kcc kcd kch kci kck kcp kcs kda kdb kdc kdh kdk kdo kdp kds kha khh khi khk kho khs kia kib kic kid kih kii kik kio kip kis kkb kkc kkh kki kkk kkp kks koa kob koc kod koh koi kok koo kop kos kpa kpc kpd kph kpi kpk kpo kpp kps ksa ksb ksc ksd ksh ksi ksk kso ksp kss o-i oaa oab oac oad oah oai oak oao oap oas ob- oba obb obc obd obh obi obk obo obp obs oc- oca ocb occ ocd och oci ock oco ocp ocs oda odb odc odd odh odi odo odp ods oha ohc ohd ohh ohi oho ohp ohs oia oib oic oid oii oik oio oip ois oka okb okc okd oki okk oko okp oks oo- ooa oob ooc ood ooh ooi ook ooo oop oos op- opa opb opc opd oph opi opk opo opp ops os- osa osb osc osd osh osi osk oso osp oss p-p paa pab pac pad pah pai pak pao pap pas pba pbb pbc pbd pbi pbk pbo pbp pbs pca pcb pcc pcd pch pci pck pco pcp pcs pda pdb pdc pdd pdh pdi pdk pdo pdp pds pha phb phc phd phi phk pho php phs pia pib pic pid pih pii pik pio pip pis pka pkb pkc pkd pki pko pkp pks poa pob poc pod poh poi pok poo pop pos ppa ppb ppc ppd pph ppi ppk ppo ppp pps ps- psa psb psc psd psh psi psk pso psp pss saa sab sac sad sah sai sak sao sap sas sba sbb sbc sbd sbh sbi sbk sbo sbp sbs sca scb scc scd sch sci sck sco scp scs sda sdb sdc sdd sdh sdi sdk sdo sdp sds sh- sha shb shc shd shh shi shk sho shp shs sia sib sic sid sih sii sik sio sip sis sk- ska skb skc skd skh ski skk sko skp sks soa sob soc sod soh soi sok soo sop sos spa spb spc spd sph spi spk spo spp sps ss- ssa ssb ssc ssd ssh ssi ssk sso ssp sss