-er -ic bbb bbc bbe bbg bbi bbl bbr bcb bcc bce bcg bci bcl bcr be- beb bec bee beg bei bel ber bgb bgc bge bgg bgi bgl bgr bi- bib bic bie big bii bil bir blb blc ble blg bli bll blr brb bre brg bri brl brr c-- cbb cbc cbe cbg cbi cbl cbr ccb ccc cce ccg cci ccl ccr ce- ceb cec cee ceg cei cel cer cgb cgc cge cgg cgi cgl cgr ci- cib cic cie cig cii cil cir cl- clb clc cle clg cli cll clr crb crc cre crg cri crl crr ebb ebc ebe ebg ebi ebl ebr ec- ecb ecc ece ecg eci ecl ecr eeb eec eee eeg eel eer egb egc ege egg egi egl egr eib eic eie eig eii eil eir elb elc ele elg eli ell elr erb erc ere erg eri erl err gbc gbe gbg gbi gbl gbr gcb gcc gce gcg gci gcl gcr ge- geb gec gee geg gei gel ger ggb ggc ggg ggi ggr gib gic gie gig gii gil gir glb glc gle glg gli gll glr grb grc gre grg gri grl grr ibb ibc ibe ibg ibi ibl ibr icb icc ice icg ici icl icr ie- iec iee ieg iei iel ier igb igc ige igg igi igl igr iib iic iie iii iil iir il- ilb ilc ile ilg ili ill ilr ir- irb irc ire irg iri irl irr lbb lbc lbe lbg lbi lbl lbr lcb lcc lce lcg lci lcl lcr leb lec lee leg lei lel ler lgb lgc lge lgg lgi lgl lgr lib lic lie lig lii lil lir llb llc lle llg lli lll llr lrb lrc lrg lri lrr rbb rbc rbe rbg rbi rbl rbr rcb rcc rce rcg rci rcl rcr re- reb rec ree reg rei rel rer rgb rgc rge rgg rgi rgr rib ric rie rig rii ril rir rlc rle rlg rli rll rlr rrb rrc rrg rri rrl rrr