a-a a-b a-i aaa aab aae aah aai aao aap aas ab- aba abb abe abh abi abo abp abs aea aeb aee aeh aei aeo aep aes aha ahb ahe ahh ahi aho ahp ahs ai- aia aib aie aih aii aio aip ais aoa aob aoe aoh aoi aoo aop aos ap- apa apb ape aph api apo app aps as- asa asb ase ash asi aso asp ass b-p baa bab bae bah bai bao bap bas bba bbb bbe bbh bbi bbo bbp bbs be- bea beb bee beh bei beo bep bes bha bhb bhe bhh bhi bho bhp bhs bi- bia bib bie bih bii bio bip bis boa bob boe boh boi boo bop bos bpa bpb bpe bph bpi bpo bpp bps bsa bsb bse bsh bsi bso bsp bss eaa eab eae eah eai eao eap eas eba ebb ebe ebh ebi ebo ebp ebs eea eeb eee eeo eep ees eha ehb ehe ehh ehi eho ehp ehs eia eib eie eii eio eip eis eo- eoa eob eoe eoh eoi eoo eop eos ep- epa epb epe eph epi epo epp eps es- esa esb ese esh esi eso esp ess h-i haa hab hae hah hai hao hap has hba hbb hbe hbh hbi hbo hbp hbs he- hea heb hee heh hei heo hep hes hha hhb hhe hhh hhi hho hhp hhs hia hib hie hih hii hio hip his hoa hob hoe hoh hoi hoo hop hos hpa hpb hpe hph hpi hpo hpp hps hsa hsb hse hsh hsi hsp hss ia- iaa iab iae iah iai iao iap ias iba ibb ibe ibh ibi ibo ibp ibs ie- iea iee iei iep ies iha ihb ihe ihh ihi iho ihp ihs iia iib iie iih iii iio iip iis io- ioa iob ioe ioh ioi ioo iop ios ipa ipb ipe ipi ipo ipp ips is- isa isb ise ish isi iso isp iss o-i oaa oab oae oah oai oao oap oas ob- oba obb obe obh obi obo obp obs oea oeb oee oeh oei oeo oep oes oha ohe ohh ohi oho ohp ohs oia oib oie oii oio oip ois oo- ooa oob ooh ooi ooo oop oos op- opa opb ope oph opi opo opp ops os- osa osb ose osh osi oso osp oss p-p paa pab pae pah pai pao pap pas pba pbb pbe pbi pbo pbp pbs pea peb pee peh pei peo pep pes pha phb phe phi pho php phs pia pib pie pih pii pio pip pis poa pob poe poh poi poo pop pos ppa ppb ppe pph ppi ppo ppp pps ps- psa psb pse psh psi pso psp pss saa sab sae sah sai sao sap sas sba sbb sbe sbh sbi sbo sbp sbs se- sea seb see seh sei seo sep ses sh- sha shb she shh shi sho shp shs sia sib sie sih sii sio sip sis soa sob soe soh soi soo sop sos spa spb spe sph spi spo spp sps ss- ssa ssb sse ssh ssi sso ssp sss