-al -er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aal aar ab- aba abb abc abe abg abi abl abr ac- aca acb acc ace acg aci acl acr aea aeb aec aee aeg aei ael aer ag- aga agb agc age agg agi agl agr ai- aia aib aic aie aig aii ail air al- ala alb alc ale alg ali all alr ar- ara arb arc are arg ari arl arr baa bab bac bae bag bai bal bar bba bbb bbc bbe bbg bbi bbl bbr bca bcb bcc bce bcg bci bcl bcr be- bea beb bec bee beg bei bel ber bga bgb bgc bge bgg bgi bgl bgr bi- bia bib bic bie big bii bil bir bla blb blc ble blg bli bll blr bra brb bre brg bri brl brr c-- caa cab cac cae cag cai cal car cba cbb cbc cbe cbg cbi cbl cbr cca ccb ccc cce ccg cci ccl ccr ce- cea ceb cec cee ceg cei cel cer cga cgb cgc cge cgg cgi cgl cgr ci- cia cib cic cie cig cii cil cir cl- cla clb clc cle clg cli cll clr cra crb crc cre crg cri crl crr eaa eab eac eae eag eai eal ear eba ebb ebc ebe ebg ebi ebl ebr ec- eca ecb ecc ece ecg eci ecl ecr eea eeb eec eee eeg eel eer ega egb egc ege egg egi egl egr eia eib eic eie eig eii eil eir ela elb elc ele elg eli ell elr era erb erc ere erg eri erl err gaa gab gac gae gag gai gal gar gba gbc gbe gbg gbi gbl gbr gca gcb gcc gce gcg gci gcl gcr ge- gea geb gec gee geg gei gel ger gga ggb ggc ggg ggi ggr gia gib gic gie gig gii gil gir gla glb glc gle glg gli gll glr gra grb grc gre grg gri grl grr ia- iaa iab iac iae iag iai ial iar iba ibb ibc ibe ibg ibi ibl ibr ica icb icc ice icg ici icl icr ie- iea iec iee ieg iei iel ier iga igb igc ige igg igi igl igr iia iib iic iie iii iil iir il- ila ilb ilc ile ilg ili ill ilr ir- ira irb irc ire irg iri irl irr la- laa lab lac lae lag lai lal lar lba lbb lbc lbe lbg lbi lbl lbr lca lcb lcc lce lcg lci lcl lcr lea leb lec lee leg lei lel ler lga lgb lgc lge lgg lgi lgl lgr lia lib lic lie lig lii lil lir lla llb llc lle llg lli lll llr lra lrb lrc lrg lri lrr ra- raa rab rac rae rag rai ral rar rba rbb rbc rbe rbg rbi rbl rbr rca rcb rcc rce rcg rci rcl rcr re- rea reb rec ree reg rei rel rer rga rgb rgc rge rgg rgi rgr ria rib ric rie rig rii ril rir rla rlc rle rlg rli rll rlr rra rrb rrc rrg rri rrl rrr