-al -er a-a a-b a-c aaa aab aac aae aag aal aam aar ab- aba abb abc abe abg abl abm abr ac- aca acb acc ace acg acl acm acr aea aeb aec aee aeg ael aem aer ag- aga agb agc age agg agl agm agr al- ala alb alc ale alg all alm alr ama amb amc ame amg aml amm amr ar- ara arb arc are arg arl arm arr baa bab bac bae bag bal bam bar bba bbb bbc bbe bbg bbl bbm bbr bca bcb bcc bce bcg bcl bcm bcr be- bea beb bec bee beg bel bem ber bga bgb bgc bge bgg bgl bgm bgr bla blb blc ble blg bll blm blr bma bmb bmc bme bmg bml bmm bmr bra brb bre brg brl brm brr c-- caa cab cac cae cag cal cam car cba cbb cbc cbe cbg cbl cbm cbr cca ccb ccc cce ccg ccl ccm ccr ce- cea ceb cec cee ceg cel cem cer cga cgb cgc cge cgg cgl cgm cgr cl- cla clb clc cle clg cll clm clr cma cmb cmc cme cmg cml cmm cmr cra crb crc cre crg crl crm crr eaa eab eac eae eag eal eam ear eba ebb ebc ebe ebg ebl ebm ebr ec- eca ecb ecc ece ecg ecl ecm ecr eea eeb eec eee eeg eel eem eer ega egb egc ege egg egl egm egr ela elb elc ele elg ell elm elr em- ema emb emc eme emg eml emm emr era erb erc ere erg erl erm err gaa gab gac gae gag gal gam gar gba gbc gbe gbg gbl gbm gbr gca gcb gcc gce gcg gcl gcm gcr ge- gea geb gec gee geg gel gem ger gga ggb ggc ggg ggm ggr gla glb glc gle glg gll glm glr gma gmb gmc gme gmg gml gmm gmr gra grb grc gre grg grl grm grr la- laa lab lac lae lag lal lam lar lba lbb lbc lbe lbg lbl lbm lbr lca lcb lcc lce lcg lcl lcm lcr lea leb lec lee leg lel lem ler lga lgb lgc lge lgg lgl lgm lgr lla llb llc lle llg lll llm llr lma lmb lmc lme lmg lml lmm lmr lra lrb lrc lrg lrm lrr m-r maa mab mac mae mag mal mam mar mba mbb mbc mbe mbg mbl mbm mbr mc- mca mcb mcc mce mcg mcl mcm mcr mea meb mec mee meg mel mem mer mga mgb mgc mge mgl mgm mgr mla mlb mlc mle mlg mll mlm mlr mma mmb mmc mme mmg mml mmm mmr mra mrb mrc mre mrg mrl mrm mrr ra- raa rab rac rae rag ral ram rar rba rbb rbc rbe rbg rbl rbm rbr rca rcb rcc rce rcg rcl rcm rcr re- rea reb rec ree reg rel rem rer rga rgb rgc rge rgg rgr rla rlc rle rlg rll rlm rlr rma rmb rmc rme rmg rml rmm rmr rra rrb rrc rrg rrl rrm rrr