-er a-a a-b a-i aaa aab aae aag aah aai aao aap aar aas ab- aba abb abe abg abh abi abo abp abr abs aea aeb aee aeg aeh aei aeo aep aer aes ag- aga agb age agg agh agi ago agp agr ags aha ahb ahe ahg ahh ahi aho ahp ahr ahs ai- aia aib aie aig aih aii aio aip air ais aoa aob aoe aog aoh aoi aoo aop aor aos ap- apa apb ape apg aph api apo app apr aps ar- ara arb are arg arh ari aro arp arr ars as- asa asb ase asg ash asi aso asp asr ass b-p baa bab bae bag bah bai bao bap bar bas bba bbb bbe bbg bbh bbi bbo bbp bbr bbs be- bea beb bee beg beh bei beo bep ber bes bga bgb bge bgg bgh bgi bgo bgp bgr bgs bha bhb bhe bhg bhh bhi bho bhp bhr bhs bi- bia bib bie big bih bii bio bip bir bis boa bob boe bog boh boi boo bop bor bos bpa bpb bpe bpg bph bpi bpo bpp bpr bps bra brb bre brg brh bri bro brp brr brs bsa bsb bse bsg bsh bsi bso bsp bsr bss eaa eab eae eag eah eai eao eap ear eas eba ebb ebe ebg ebh ebi ebo ebp ebr ebs eea eeb eee eeg eeo eep eer ees ega egb ege egg egh egi ego egp egr egs eha ehb ehe ehg ehh ehi eho ehp ehr ehs eia eib eie eig eii eio eip eir eis eo- eoa eob eoe eog eoh eoi eoo eop eor eos ep- epa epb epe epg eph epi epo epp epr eps era erb ere erg erh eri ero erp err ers es- esa esb ese esg esh esi eso esp esr ess g-p gaa gab gae gag gah gai gao gap gar gas gba gbe gbg gbh gbi gbo gbp gbr gbs ge- gea geb gee geg geh gei geo gep ger ges gga ggb ggg ggh ggi ggo ggp ggr ggs gha ghb ghe ghg ghh ghi gho ghp ghr ghs gia gib gie gig gih gii gio gip gir gis goa gob goe gog goh goi goo gop gor gos gpa gpb gpe gpg gph gpi gpo gpp gpr gps gra grb gre grg grh gri gro grp grr grs gsa gsb gse gsg gsi gso gsp gsr gss h-i haa hab hae hag hah hai hao hap har has hba hbb hbe hbg hbh hbi hbo hbp hbr hbs he- hea heb hee heg heh hei heo hep her hes hga hgb hge hgg hgh hgi hgo hgp hgr hgs hha hhb hhe hhg hhh hhi hho hhp hhr hhs hia hib hie hig hih hii hio hip hir his hoa hob hoe hog hoh hoi hoo hop hor hos hpa hpb hpe hpg hph hpi hpo hpp hpr hps hr- hra hrb hre hrg hrh hri hro hrp hrr hrs hsa hsb hse hsg hsh hsi hsp hsr hss ia- iaa iab iae iag iah iai iao iap iar ias iba ibb ibe ibg ibh ibi ibo ibp ibr ibs ie- iea iee ieg iei iep ier ies iga igb ige igg igh igi igo igp igr igs iha ihb ihe ihg ihh ihi iho ihp ihr ihs iia iib iie iih iii iio iip iir iis io- ioa iob ioe iog ioh ioi ioo iop ior ios ipa ipb ipe ipg ipi ipo ipp ipr ips ir- ira irb ire irg iri iro irp irr irs is- isa isb ise isg ish isi iso isp isr iss o-i oaa oab oae oag oah oai oao oap oar oas ob- oba obb obe obg obh obi obo obp obr obs oea oeb oee oeg oeh oei oeo oep oer oes oga oge ogg ogh ogi ogo ogp ogs oha ohe ohg ohh ohi oho ohp ohr ohs oia oib oie oii oio oip oir ois oo- ooa oob oog ooh ooi ooo oop oor oos op- opa opb ope opg oph opi opo opp opr ops or- ora orb ore org orh ori oro orp orr ors os- osa osb ose osg osh osi oso osp osr oss p-p paa pab pae pag pah pai pao pap par pas pba pbb pbe pbg pbi pbo pbp pbr pbs pea peb pee peg peh pei peo pep per pes pga pgb pge pgg pgh pgi pgo pgp pgr pgs pha phb phe phg phi pho php phr phs pia pib pie pig pih pii pio pip pir pis poa pob poe pog poh poi poo pop por pos ppa ppb ppe ppg pph ppi ppo ppp ppr pps pra prb pre prg prh pri pro prp prr prs ps- psa psb pse psg psh psi pso psp psr pss ra- raa rab rae rag rah rai rao rap rar ras rba rbb rbe rbg rbh rbi rbo rbp rbr rbs re- rea reb ree reg reh rei reo rep rer res rga rgb rge rgg rgh rgi rgo rgp rgr rgs rh- rha rhb rhe rhg rhh rhi rho rhp rhr rhs ria rib rie rig rih rii rio rip rir ris roa rob roe rog roh roi roo rop ror ros rpa rpb rpe rpg rph rpi rpo rpp rpr rps rra rrb rrg rrh rri rrp rrr rrs rsa rsb rse rsg rsh rsi rso rsp rsr rss saa sab sae sag sah sai sao sap sar sas sba sbb sbe sbg sbh sbi sbo sbp sbr sbs se- sea seb see seg seh sei seo sep ser ses sga sgb sge sgg sgh sgi sgo sgp sgr sgs sh- sha shb she shg shh shi sho shp shr shs sia sib sie sig sih sii sio sip sir sis soa sob soe sog soh soi soo sop sor sos spa spb spe spg sph spi spo spp spr sps sr- sra srb sre