-er -ic bbb bbc bbe bbg bbh bbi bbl bbr bcb bcc bce bcg bch bci bcl bcr be- beb bec bee beg beh bei bel ber bgb bgc bge bgg bgh bgi bgl bgr bhb bhc bhe bhg bhh bhi bhl bhr bi- bib bic bie big bih bii bil bir blb blc ble blg blh bli bll blr brb bre brg brh bri brl brr c-- cbb cbc cbe cbg cbh cbi cbl cbr ccb ccc cce ccg cch cci ccl ccr ce- ceb cec cee ceg ceh cei cel cer cgb cgc cge cgg cgh cgi cgl cgr ch- chb chc che chg chh chi chl chr ci- cib cic cie cig cih cii cil cir cl- clb clc cle clg clh cli cll clr crb crc cre crg crh cri crl crr ebb ebc ebe ebg ebh ebi ebl ebr ec- ecb ecc ece ecg ech eci ecl ecr eeb eec eee eeg eel eer egb egc ege egg egh egi egl egr ehb ehc ehe ehg ehh ehi ehl ehr eib eic eie eig eii eil eir elb elc ele elg elh eli ell elr erb erc ere erg erh eri erl err gbc gbe gbg gbh gbi gbl gbr gcb gcc gce gcg gch gci gcl gcr ge- geb gec gee geg geh gei gel ger ggb ggc ggg ggh ggi ggr ghb ghc ghe ghg ghh ghi ghl ghr gib gic gie gig gih gii gil gir glb glc gle glg glh gli gll glr grb grc gre grg grh gri grl grr h-i hbb hbc hbe hbg hbh hbi hbl hbr hcb hcc hce hcg hch hci hcl hcr he- heb hec hee heg heh hei hel her hgb hgc hge hgg hgh hgi hgl hgr hhb hhc hhe hhg hhh hhi hhl hhr hib hic hie hig hih hii hil hir hlb hlc hle hlg hlh hli hll hlr hr- hrb hrc hre hrg hrh hri hrl hrr ibb ibc ibe ibg ibh ibi ibl ibr icb icc ice icg ich ici icl icr ie- iec iee ieg iei iel ier igb igc ige igg igh igi igl igr ihb ihc ihe ihg ihh ihi ihl ihr iib iic iie iih iii iil iir il- ilb ilc ile ilg ilh ili ill ilr ir- irb irc ire irg iri irl irr lbb lbc lbe lbg lbh lbi lbl lbr lcb lcc lce lcg lch lci lcl lcr leb lec lee leg leh lei lel ler lgb lgc lge lgg lgh lgi lgl lgr lhb lhc lhh lhi lhr lib lic lie lig lih lii lil lir llb llc lle llg lli lll llr lrb lrc lrg lrh lri lrr rbb rbc rbe rbg rbh rbi rbl rbr rcb rcc rce rcg rch rci rcl rcr re- reb rec ree reg reh rei rel rer rgb rgc rge rgg rgh rgi rgr rh- rhb rhc rhe rhg rhh rhi rhl rhr rib ric rie rig rih rii ril rir rlc rle rlg rlh rli rll rlr rrb rrc rrg rrh rri rrl rrr