-er a-a a-c a-t aaa aac aae aak aam aan aar aat ac- aca acc ace ack acm acn acr act aea aec aee aek aem aen aer aet aka akc ake akk akm akn akr ama amc ame amk amm amn amr amt an- ana anc ane ank anm ann anr ant ar- ara arc are ark arm arn arr art at- ata atc ate atm atn atr att c-- caa cac cae cak cam can car cat cca ccc cce cck ccm ccn ccr cct ce- cea cec cee cek cem cen cer cet cka ckc ckm ckt cma cmc cme cmk cmm cmn cmr cmt cn- cna cnc cne cnm cnn cnr cnt cra crc cre crk crm crn crr crt cta ctc cte ctk ctm ctn ctr ctt eaa eac eae eak eam ean ear eat ec- eca ecc ece eck ecm ecn ecr ect eea eec eee eek eem een eer eet eka ekc eke ekr ekt em- ema emc eme emk emm emn emr emt en- ena enc ene enk enm enn enr ent era erc ere erk erm ern err ert eta etc ete etk etm etn etr ett k-t ka- kaa kac kae kak kam kan kar kat kca kcc kce kck kcm kcn kcr kct ke- kea kec kee kek kem ken ker ket kkc kke kkk kkm kkn kkr kkt kma kmc kme kmk kmm kmt kn- kna knc kne knk knm knn knr knt kra krc krk krn krr krt kta ktc kte ktk ktm ktn ktr ktt m-r maa mac mae mak mam man mar mat mc- mca mcc mce mck mcm mcn mcr mct mea mec mee mek mem men mer met mka mkc mke mkk mkm mkn mkr mkt mma mmc mme mmk mmm mmn mmr mmt mna mnc mne mnk mnm mnn mnr mnt mra mrc mre mrk mrm mrn mrr mrt mta mtc mte mtk mtm mtn mtr mtt naa nac nae nak nam nan nar nat nca ncc nce nck ncm ncn ncr nct ne- nea nec nee nek nem nen ner net nka nkc nke nkk nkm nkn nkr nkt nma nmc nme nmk nmm nmn nmr nmt nna nnc nne nnk nnm nnn nnt nra nrc nre nrk nrm nrn nrr nrt nta ntc nte ntk ntm ntn ntr ntt ra- raa rac rae rak ram ran rar rat rca rcc rce rcm rcn rcr rct re- rea rec ree rek rem ren rer ret rkc rke rkk rkm rkt rma rmc rme rmm rmn rmr rmt rna rnc rnm rnn rnr rnt rra rrc rrk rrm rrn rrr rrt rta rtc rte rtk rtm rtn rtr rtt taa tac tae tak tam tan tar tat tca tcc tce tck tcm tcn tcr tct te- tea tec tee tek tem ten ter tet tka tkc tke tkk tkm tkr tkt tma tmc tme tmk tmm tmn tmr tmt tna tnc tne tnk tnm tnn tnr tnt tra trc tre trk trm trn trr trt tta ttc tte ttk ttm ttn ttr ttt