-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aak aam aao aar aat ab- aba abb abc abe abi abk abm abo abr abt ac- aca acb acc ace aci ack acm aco acr act aea aeb aec aee aei aek aem aeo aer aet ai- aia aib aic aie aii aik aim aio air ait aka akb akc ake aki akk akm ako akr ama amb amc ame ami amk amm amo amr amt aoa aob aoc aoe aoi aok aom aoo aor aot ar- ara arb arc are ari ark arm aro arr art at- ata atb atc ate ati atm ato atr att baa bab bac bae bai bak bam bao bar bat bba bbb bbc bbe bbi bbk bbm bbo bbr bbt bca bcb bcc bce bci bck bcm bco bcr bct be- bea beb bec bee bei bek bem beo ber bet bi- bia bib bic bie bii bik bim bio bir bit bka bkb bkc bke bkk bkm bko bkr bkt bma bmb bmc bme bmi bmk bmm bmo bmr bmt boa bob boc boe boi bok bom boo bor bot bra brb bre bri brk brm bro brr brt bta btb btc bte bti btk btm bto btr btt c-- caa cab cac cae cai cak cam cao car cat cba cbb cbc cbe cbi cbk cbm cbo cbr cbt cca ccb ccc cce cci cck ccm cco ccr cct ce- cea ceb cec cee cei cek cem ceo cer cet ci- cia cib cic cie cii cik cim cio cir cit cka ckb ckc cki ckm cko ckt cma cmb cmc cme cmi cmk cmm cmo cmr cmt co- coa cob coc coe coi cok com coo cor cot cra crb crc cre cri crk crm cro crr crt cta ctb ctc cte cti ctk ctm cto ctr ctt eaa eab eac eae eai eak eam eao ear eat eba ebb ebc ebe ebi ebk ebm ebo ebr ebt ec- eca ecb ecc ece eci eck ecm eco ecr ect eea eeb eec eee eek eem eeo eer eet eia eib eic eie eii eik eim eio eir eit eka ekb ekc eke eki eko ekr ekt em- ema emb emc eme emi emk emm emo emr emt eo- eoa eob eoc eoe eoi eok eom eoo eor eot era erb erc ere eri erk erm ero err ert eta etb etc ete eti etk etm eto etr ett ia- iaa iab iac iae iai iam iao iar iat iba ibb ibc ibe ibi ibk ibm ibo ibr ibt ica icb icc ice ici ick icm ico icr ict ie- iea iec iee iei iek iem ier iet iia iib iic iie iii iim iio iir iit ika ikb ikc ike iki ikk iko ikr ikt im- ima imb imc ime imi imm imo imt io- ioa iob ioc ioe ioi iom ioo ior iot ir- ira irb irc ire iri irk irm iro irr irt ita itb itc ite iti itk itm ito itt k-t ka- kaa kab kac kae kai kak kam kao kar kat kba kbb kbc kbe kbi kbk kbm kbo kbr kca kcb kcc kce kci kck kcm kcr kct ke- kea keb kec kee kei kek kem keo ker ket kia kib kic kie kii kik kim kio kir kit kkb kkc kke kki kkk kkm kkr kkt kma kmb kmc kme kmi kmk kmm kmo kmt koa kob koc koe koi kok kom koo kor kot kra krc kri krk kro krr krt kta ktb ktc kte ktk ktm kto ktr ktt m-o m-r maa mab mac mae mai mak mam mao mar mat mba mbb mbc mbe mbi mbk mbm mbo mbr mbt mc- mca mcb mcc mce mci mck mcm mco mcr mct mea meb mec mee mei mek mem meo mer met mi- mia mib mic mie mii mik mim mio mir mit mka mkb mkc mke mkk mkm mko mkr mkt mma mmb mmc mme mmi mmk mmm mmo mmr mmt moa mob moc moe moi mok mom moo mor mot mra mrb mrc mre mri mrk mrm mro mrr mrt mta mtb mtc mte mti mtk mtm mto mtr mtt o-i oaa oab oac oae oai oak oam oao oar oat ob- oba obb obc obe obi obk obm obo obr obt oc- oca ocb occ oci ock ocm oco ocr oct oea oeb oec oee oei oem oeo oer oet oia oib oic oie oii oik oim oio oir oit oka okb okc oke oki okk oko okr om- oma omb omc ome omi omm omo omr omt oo- ooa oob ooc ooi ook oom ooo oor oot or- ora orb orc ore ori ork orm oro orr ort ot- ota otb otc ote oti otk otm oto otr ott ra- raa rab rac rae rai rak ram rao rar rat rba rbb rbc rbe rbi rbk rbm rbo rbr rbt rca rcb rcc rce rci rcm rco rcr rct re- rea reb rec ree rei rek rem reo rer ret ria rib ric rie rii rik rim rio rir rit rkb rkc rke rkk rkm rko rkt rma rmb rmc rme rmi rmm rmo rmr rmt roa rob roc roe roi rok rom roo ror rot rra rrb rrc rri rrk rrm rrr rrt rta rtb rtc rte rti rtk rtm rto rtr rtt taa tab tac tae tai tak tam tao tar tat tba tbb tbc tbe tbi tbk tbm tbo tbr tbt tca tcb tcc tce tci tck tcm tco tcr tct te- tea teb tec tee tei tek tem teo ter tet tia tib tic tie tii tik tim tio tir tit tka tkb tkc tke tkk tkm tko tkr tkt tma tmb tmc tme tmi tmk tmm tmo tmr tmt to- toa tob toc toe toi tok tom too tor tot tra trb trc tre tri trk trm tro trr trt tta ttb ttc tte tti ttk ttm tto ttr