-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aak aam aar aas aat ab- aba abb abc abe abi abk abm abr abs abt ac- aca acb acc ace aci ack acm acr acs act aea aeb aec aee aei aek aem aer aes aet ai- aia aib aic aie aii aik aim air ais ait aka akb akc ake aki akk akm akr aks ama amb amc ame ami amk amm amr ams amt ar- ara arb arc are ari ark arm arr ars art as- asa asb asc ase asi ask asm asr ass ast at- ata atb atc ate ati atm atr ats att baa bab bac bae bai bak bam bar bas bat bba bbb bbc bbe bbi bbk bbm bbr bbs bbt bca bcb bcc bce bci bck bcm bcr bcs bct be- bea beb bec bee bei bek bem ber bes bet bi- bia bib bic bie bii bik bim bir bis bit bka bkb bkc bke bkk bkm bkr bks bkt bma bmb bmc bme bmi bmk bmm bmr bms bmt bra brb bre bri brk brm brr brs brt bsa bsb bsc bse bsi bsk bsm bsr bss bst bta btb btc bte bti btk btm btr bts btt c-- caa cab cac cae cai cak cam car cas cat cba cbb cbc cbe cbi cbk cbm cbr cbs cbt cca ccb ccc cce cci cck ccm ccr ccs cct ce- cea ceb cec cee cei cek cem cer ces cet ci- cia cib cic cie cii cik cim cir cis cit cka ckb ckc cki ckm cks ckt cma cmb cmc cme cmi cmk cmm cmr cms cmt cra crb crc cre cri crk crm crr crs crt csa csb csc cse csi csk csm csr css cst cta ctb ctc cte cti ctk ctm ctr cts ctt eaa eab eac eae eai eak eam ear eas eat eba ebb ebc ebe ebi ebk ebm ebr ebs ebt ec- eca ecb ecc ece eci eck ecm ecr ecs ect eea eeb eec eee eek eem eer ees eet eia eib eic eie eii eik eim eir eis eit eka ekb ekc eke eki ekr eks ekt em- ema emb emc eme emi emk emm emr ems emt era erb erc ere eri erk erm err ers ert es- esa esb esc ese esi esk esm esr ess est eta etb etc ete eti etk etm etr ets ett ia- iaa iab iac iae iai iam iar ias iat iba ibb ibc ibe ibi ibk ibm ibr ibs ibt ica icb icc ice ici ick icm icr ics ict ie- iea iec iee iei iek iem ier ies iet iia iib iic iie iii iim iir iis iit ika ikb ikc ike iki ikk ikr iks ikt im- ima imb imc ime imi imm ims imt ir- ira irb irc ire iri irk irm irr irs irt is- isa isb isc ise isi isk ism isr iss ist ita itb itc ite iti itk itm its itt k-t ka- kaa kab kac kae kai kak kam kar kas kat kba kbb kbc kbe kbi kbk kbm kbr kbs kca kcb kcc kce kci kck kcm kcr kcs kct ke- kea keb kec kee kei kek kem ker kes ket kia kib kic kie kii kik kim kir kis kit kkb kkc kke kki kkk kkm kkr kks kkt kma kmb kmc kme kmi kmk kmm kms kmt kra krc kri krk krr krs krt ksa ksb ksc kse ksi ksk ksm ksr kss kst kta ktb ktc kte ktk ktm ktr kts ktt m-r maa mab mac mae mai mak mam mar mas mat mba mbb mbc mbe mbi mbk mbm mbr mbs mbt mc- mca mcb mcc mce mci mck mcm mcr mcs mct mea meb mec mee mei mek mem mer mes met mi- mia mib mic mie mii mik mim mir mis mit mka mkb mkc mke mkk mkm mkr mks mkt mma mmb mmc mme mmi mmk mmm mmr mms mmt mra mrb mrc mre mri mrk mrm mrr mrs mrt msa msb msc mse msi msk msm msr mss mst mta mtb mtc mte mti mtk mtm mtr mts mtt ra- raa rab rac rae rai rak ram rar ras rat rba rbb rbc rbe rbi rbk rbm rbr rbs rbt rca rcb rcc rce rci rcm rcr rcs rct re- rea reb rec ree rei rek rem rer res ret ria rib ric rie rii rik rim rir ris rit rkb rkc rke rkk rkm rks rkt rma rmb rmc rme rmi rmm rmr rms rmt rra rrb rrc rri rrk rrm rrr rrs rrt rsa rsb rsc rse rsi rsk rsm rsr rss rst rta rtb rtc rte rti rtk rtm rtr rts rtt saa sab sac sae sai sak sam sar sas sat sba sbb sbc sbe sbi sbk sbm sbr sbs sbt sca scb scc sce sci sck scm scr scs sct se- sea seb sec see sei sek sem ser ses set sia sib sic sie sii sik sim sir sis sit sk- ska skb skc ske ski skk skm skr sks skt sma smb smc sme smi smk smm smr sms smt sr- sra srb src sre sri srk srm srr srs srt ss- ssa ssb ssc sse ssi ssk ssm ssr sss sst sta stb stc ste sti stk stm str sts stt taa tab tac tae tai tak tam tar tas tat tba tbb tbc tbe tbi tbk tbm tbr tbs tbt tca tcb tcc tce tci tck tcm tcr tcs tct te- tea teb tec tee tei tek tem ter tes tet tia tib tic tie tii tik tim tir tis tit tka tkb tkc tke tkk tkm tkr tks tkt tma tmb tmc tme tmi tmk tmm tmr tms tmt tra trb trc tre tri trk trm trr trs trt tsa tsb tsc tse tsi tsk tsm tsr tss tst tta ttb ttc