-er a-a a-b a-i a-t aaa aab aae aag aai aam aao aap aar aat ab- aba abb abe abg abi abm abo abp abr abt aea aeb aee aeg aei aem aeo aep aer aet ag- aga agb age agg agi agm ago agp agr agt ai- aia aib aie aig aii aim aio aip air ait ama amb ame amg ami amm amo amp amr amt aoa aob aoe aog aoi aom aoo aop aor aot ap- apa apb ape apg api apm apo app apr apt ar- ara arb are arg ari arm aro arp arr art at- ata atb ate atg ati atm ato atp atr att b-p baa bab bae bag bai bam bao bap bar bat bba bbb bbe bbg bbi bbm bbo bbp bbr bbt be- bea beb bee beg bei bem beo bep ber bet bga bgb bge bgg bgi bgm bgo bgp bgr bgt bi- bia bib bie big bii bim bio bip bir bit bma bmb bme bmg bmi bmm bmo bmp bmr bmt boa bob boe bog boi bom boo bop bor bot bpa bpb bpe bpg bpi bpm bpo bpp bpr bpt bra brb bre brg bri brm bro brp brr brt bta btb bte btg bti btm bto btp btr btt eaa eab eae eag eai eam eao eap ear eat eba ebb ebe ebg ebi ebm ebo ebp ebr ebt eea eeb eee eeg eem eeo eep eer eet ega egb ege egg egi egm ego egp egr egt eia eib eie eig eii eim eio eip eir eit em- ema emb eme emg emi emm emo emp emr emt eo- eoa eob eoe eog eoi eom eoo eop eor eot ep- epa epb epe epg epi epm epo epp epr ept era erb ere erg eri erm ero erp err ert eta etb ete etg eti etm eto etp etr ett g-p gaa gab gae gag gai gam gao gap gar gat gba gbe gbg gbi gbm gbo gbp gbr gbt ge- gea geb gee geg gei gem geo gep ger get gga ggb ggg ggi ggm ggo ggp ggr ggt gia gib gie gig gii gim gio gip gir git gma gmb gme gmg gmi gmm gmo gmp gmr gmt goa gob goe gog goi gom goo gop gor got gpa gpb gpe gpg gpi gpm gpo gpp gpr gpt gra grb gre grg gri grm gro grp grr grt gta gtb gte gtg gti gtm gto gtp gtr gtt ia- iaa iab iae iag iai iam iao iap iar iat iba ibb ibe ibg ibi ibm ibo ibp ibr ibt ie- iea iee ieg iei iem iep ier iet iga igb ige igg igi igm igo igp igr igt iia iib iie iii iim iio iip iir iit im- ima imb ime img imi imm imo imp imt io- ioa iob ioe iog ioi iom ioo iop ior iot ipa ipb ipe ipg ipi ipm ipo ipp ipr ipt ir- ira irb ire irg iri irm iro irp irr irt ita itb ite itg iti itm ito itp itt m-o m-r maa mab mae mag mai mam mao map mar mat mba mbb mbe mbg mbi mbm mbo mbp mbr mbt mea meb mee meg mei mem meo mep mer met mga mgb mge mgi mgm mgo mgp mgr mgt mi- mia mib mie mig mii mim mio mip mir mit mma mmb mme mmg mmi mmm mmo mmp mmr mmt moa mob moe mog moi mom moo mop mor mot mpa mpb mpe mpg mpi mpm mpo mpp mpr mpt mra mrb mre mrg mri mrm mro mrp mrr mrt mta mtb mte mtg mti mtm mto mtp mtr mtt o-i oaa oab oae oag oai oam oao oap oar oat ob- oba obb obe obg obi obm obo obp obr obt oea oeb oee oeg oei oem oeo oep oer oet oga oge ogg ogi ogo ogp ogt oia oib oie oii oim oio oip oir oit om- oma omb ome omg omi omm omo omp omr omt oo- ooa oob oog ooi oom ooo oop oor oot op- opa opb ope opg opi opm opo opp opr opt or- ora orb ore org ori orm oro orp orr ort ot- ota otb ote otg oti otm oto otp otr ott p-p paa pab pae pag pai pam pao pap par pat pba pbb pbe pbg pbi pbm pbo pbp pbr pbt pea peb pee peg pei pem peo pep per pet pga pgb pge pgg pgi pgm pgo pgp pgr pgt pia pib pie pig pii pim pio pip pir pit pma pmb pme pmg pmi pmm pmo pmp pmr pmt poa pob poe pog poi pom poo pop por pot ppa ppb ppe ppg ppi ppm ppo ppp ppr ppt pra prb pre prg pri prm pro prp prr prt pt- pta ptb pte ptg pti ptm pto ptp ptr ptt ra- raa rab rae rag rai ram rao rap rar rat rba rbb rbe rbg rbi rbm rbo rbp rbr rbt re- rea reb ree reg rei rem reo rep rer ret rga rgb rge rgg rgi rgo rgp rgr rgt ria rib rie rig rii rim rio rip rir rit rma rmb rme rmg rmi rmm rmo rmp rmr rmt roa rob roe rog roi rom roo rop ror rot rpa rpb rpe rpg rpi rpm rpo rpp rpr rpt rra rrb rrg rri rrm rrp rrr rrt rta rtb rte rtg rti rtm rto rtp rtr rtt taa tab tae tag tai tam tao tap tar tat tba tbb tbe tbg tbi tbm tbo tbp tbr tbt te- tea teb tee teg tei tem teo tep ter tet tga tgb tge tgg tgi tgm tgo tgp tgr tgt tia tib tie tig tii tim tio tip tir tit tma tmb tme tmg tmi tmm tmo tmp tmr tmt to- toa tob toe tog toi tom too top tor tot tpa tpb tpe tpg tpi tpm tpo