-er -ic bbb bbc bbe bbi bbr bbs bcb bcc bce bci bcr bcs bcv be- beb bec bee bei ber bes bev bi- bib bic bie bii bir bis biv brb bre bri brr brs brv bsb bsc bse bsi bsr bss bsv bvb bvc bve bvi bvr bvs bvv c-- cbb cbc cbe cbi cbr cbs cbv ccb ccc cce cci ccr ccs ccv ce- ceb cec cee cei cer ces cev ci- cib cic cie cii cir cis civ crb crc cre cri crr crs crv csb csc cse csi csr css csv cvb cvc cve cvi cvr cvs cvv ebb ebc ebe ebi ebr ebs ebv ec- ecb ecc ece eci ecr ecs ecv eeb eec eee eer ees eev eib eic eie eii eir eis eiv erb erc ere eri err ers erv es- esb esc ese esi esr ess esv evb evc eve evi evr evs evv i-v ibb ibc ibe ibi ibr ibs ibv icb icc ice ici icr ics icv ie- iec iee iei ier ies iev iib iic iie iii iir iis ir- irb irc ire iri irr irs irv is- isb isc ise isi isr iss isv ivb ivc ive ivi ivr ivs ivv rbb rbc rbe rbi rbr rbs rcb rcc rce rci rcr rcs rcv re- reb rec ree rei rer res rev rib ric rie rii rir ris riv rrb rrc rri rrr rrs rsb rsc rse rsi rsr rss rsv rvb rvc rve rvi rvr rvs rvv sbb sbc sbe sbi sbr sbs sbv scb scc sce sci scr scs scv se- seb sec see sei ser ses sev sib sic sie sii sir sis siv sr- srb src sre sri srr srs srv ss- ssb ssc sse ssi ssr sss ssv svb svc sve svi svr svs svv v-e vbc vbi vbr vbs vbv vcc vce vci vcr vcs veb vec vee vei ver ves vi- vib vic vie vii vir vis viv vrb vrc vre vri vrr vrs vsb vsc vse vsi vsr vss vsv vvb vvc vvi vvr vvs vvv