-er -ic b-u bbb bbc bbe bbh bbi bbr bbu bcb bcc bce bch bci bcr bcu be- beb bec bee beh bei ber beu bhb bhc bhe bhh bhi bhr bhu bi- bib bic bie bih bii bir biu brb bre brh bri brr bru bub buc bue buh bui bur buu c-- cbb cbc cbe cbh cbi cbr cbu ccb ccc cce cch cci ccr ccu ce- ceb cec cee ceh cei cer ceu ch- chb chc che chh chi chr chu ci- cib cic cie cih cii cir ciu crb crc cre crh cri crr cru cub cuc cue cuh cui cur cuu ebb ebc ebe ebh ebi ebr ebu ec- ecb ecc ece ech eci ecr ecu eeb eec eee eer ehb ehc ehe ehh ehi ehr ehu eib eic eie eii eir eiu erb erc ere erh eri err eru eu- eub euc eue eui eur h-i hbb hbc hbe hbh hbi hbr hbu hcb hcc hce hch hci hcr he- heb hec hee heh hei her heu hhb hhc hhe hhh hhi hhr hhu hib hic hie hih hii hir hiu hr- hrb hrc hre hrh hri hrr hru hub huc hue huh hui hur huu ibb ibc ibe ibh ibi ibr ibu icb icc ice ich ici icr icu ie- iec iee iei ier ihb ihc ihe ihh ihi ihr ihu iib iic iie iih iii iir iiu ir- irb irc ire iri irr iru iu- iub iuc iue iui iur rbb rbc rbe rbh rbi rbr rbu rcb rcc rce rch rci rcr rcu re- reb rec ree reh rei rer reu rh- rhb rhc rhe rhh rhi rhr rhu rib ric rie rih rii rir rrb rrc rrh rri rrr rru rub ruc rue ruh rui rur ruu ubb ubc ube ubh ubi ubr ubu ucb ucc uce uch uci ucr ucu ueb uec uee ueh uei uer uhb uhc uhe uhh uhi uhr uhu uib uic uie uii uir uiu ur- urb urc ure uri urr uru uuc uue uur uuu