-er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aak aam aar ab- aba abb abc abe abg abi abk abm abr ac- aca acb acc ace acg aci ack acm acr aea aeb aec aee aeg aei aek aem aer ag- aga agb agc age agg agi agk agm agr ai- aia aib aic aie aig aii aik aim air aka akb akc ake akg aki akk akm akr ama amb amc ame amg ami amk amm amr ar- ara arb arc are arg ari ark arm arr baa bab bac bae bag bai bak bam bar bba bbb bbc bbe bbg bbi bbk bbm bbr bca bcb bcc bce bcg bci bck bcm bcr be- bea beb bec bee beg bei bek bem ber bga bgb bgc bge bgg bgi bgk bgm bgr bi- bia bib bic bie big bii bik bim bir bka bkb bkc bke bkg bkk bkm bkr bma bmb bmc bme bmg bmi bmk bmm bmr bra brb bre brg bri brk brm brr c-- caa cab cac cae cag cai cak cam car cba cbb cbc cbe cbg cbi cbk cbm cbr cca ccb ccc cce ccg cci cck ccm ccr ce- cea ceb cec cee ceg cei cek cem cer cga cgb cgc cge cgg cgi cgm cgr ci- cia cib cic cie cig cii cik cim cir cka ckb ckc cki ckm cma cmb cmc cme cmg cmi cmk cmm cmr cra crb crc cre crg cri crk crm crr eaa eab eac eae eag eai eak eam ear eba ebb ebc ebe ebg ebi ebk ebm ebr ec- eca ecb ecc ece ecg eci eck ecm ecr eea eeb eec eee eeg eek eem eer ega egb egc ege egg egi egm egr eia eib eic eie eig eii eik eim eir eka ekb ekc eke ekg eki ekr em- ema emb emc eme emg emi emk emm emr era erb erc ere erg eri erk erm err gaa gab gac gae gag gai gak gam gar gba gbc gbe gbg gbi gbk gbm gbr gca gcb gcc gce gcg gci gck gcm gcr ge- gea geb gec gee geg gei gek gem ger gga ggb ggc ggg ggi ggm ggr gia gib gic gie gig gii gik gim gir gka gkb gkm gma gmb gmc gme gmg gmi gmm gmr gra grb grc gre grg gri grk grm grr ia- iaa iab iac iae iag iai iam iar iba ibb ibc ibe ibg ibi ibk ibm ibr ica icb icc ice icg ici ick icm icr ie- iea iec iee ieg iei iek iem ier iga igb igc ige igg igi igk igm igr iia iib iic iie iii iim iir ika ikb ikc ike iki ikk ikr im- ima imb imc ime img imi imm ir- ira irb irc ire irg iri irk irm irr ka- kaa kab kac kae kag kai kak kam kar kba kbb kbc kbe kbi kbk kbm kbr kca kcb kcc kce kcg kci kck kcm kcr ke- kea keb kec kee keg kei kek kem ker kga kgb kgc kgi kgm kia kib kic kie kig kii kik kim kir kkb kkc kke kki kkk kkm kkr kma kmb kmc kme kmg kmi kmk kmm kra krc krg kri krk krr m-r maa mab mac mae mag mai mak mam mar mba mbb mbc mbe mbg mbi mbk mbm mbr mc- mca mcb mcc mce mcg mci mck mcm mcr mea meb mec mee meg mei mek mem mer mga mgb mgc mge mgi mgk mgm mgr mi- mia mib mic mie mig mii mik mim mir mka mkb mkc mke mkg mkk mkm mkr mma mmb mmc mme mmg mmi mmk mmm mmr mra mrb mrc mre mrg mri mrk mrm mrr ra- raa rab rac rae rag rai rak ram rar rba rbb rbc rbe rbg rbi rbk rbm rbr rca rcb rcc rce rcg rci rcm rcr re- rea reb rec ree reg rei rek rem rer rga rgb rgc rge rgg rgi rgk rgr ria rib ric rie rig rii rik rim rir rkb rkc rke rkg rkk rkm rma rmb rmc rme rmg rmi rmm rmr rra rrb rrc rrg rri rrk rrm rrr