-er -ic bbb bbc bbe bbf bbi bbm bbo bbr bbt bcb bcc bce bcf bci bcm bco bcr bct be- beb bec bee bef bei bem beo ber bet bfb bfc bfe bff bfi bfm bfo bfr bft bi- bib bic bie bif bii bim bio bir bit bmb bmc bme bmf bmi bmm bmo bmr bmt bob boc boe bof boi bom boo bor bot brb bre brf bri brm bro brr brt btb btc bte btf bti btm bto btr btt c-- cbb cbc cbe cbf cbi cbm cbo cbr cbt ccb ccc cce ccf cci ccm cco ccr cct ce- ceb cec cee cef cei cem ceo cer cet cfb cfc cfe cff cfi cfm cfo cfr cft ci- cib cic cie cif cii cim cio cir cit cmb cmc cme cmf cmi cmm cmo cmr cmt co- cob coc coe cof coi com coo cor cot crb crc cre crf cri crm cro crr crt ctb ctc cte ctf cti ctm cto ctr ctt ebb ebc ebe ebf ebi ebm ebo ebr ebt ec- ecb ecc ece ecf eci ecm eco ecr ect eeb eec eee eef eem eeo eer eet ef- efb efc efe eff efi efm efo efr eft eib eic eie eif eii eim eio eir eit em- emb emc eme emf emi emm emo emr emt eo- eob eoc eoe eof eoi eom eoo eor eot erb erc ere erf eri erm ero err ert etb etc ete etf eti etm eto etr ett fbb fbc fbe fbf fbi fbm fbo fbr fbt fcb fcc fce fcf fci fcm fco fcr fct feb fec fee fef fei fem feo fer fet ffc ffe fff ffi ffm ffo ffr fft fib fic fie fif fii fim fir fit fmb fmc fme fmf fmi fmm fmo fmr fmt fob foc foe fof foi fom foo for fot frb frc fre frf fri frm fro frr frt ftb ftc fte ftf fti ftm fto ftr ftt i-f ibb ibc ibe ibf ibi ibm ibo ibr ibt icb icc ice icf ici icm ico icr ict ie- iec iee ief iei iem ier iet ifb ifc ife iff ifi ifm ifo ifr ift iib iic iie iif iii iim iio iir iit im- imb imc ime imf imi imm imo imt io- iob ioc ioe iof ioi iom ioo ior iot ir- irb irc ire irf iri irm iro irr irt itb itc ite itf iti itm ito itt m-f m-o m-r mbb mbc mbe mbf mbi mbm mbo mbr mbt mc- mcb mcc mce mcf mci mcm mco mcr mct meb mec mee mef mei mem meo mer met mfb mfc mfe mff mfi mfm mfo mfr mft mi- mib mic mie mif mii mim mio mir mit mmb mmc mme mmf mmi mmm mmo mmr mmt mob moc moe mof moi mom moo mor mot mrb mrc mre mrf mri mrm mro mrr mrt mtb mtc mte mtf mti mtm mto mtr mtt o-i ob- obb obc obe obf obi obm obo obr obt oc- ocb occ ocf oci ocm oco ocr oct oeb oec oee oef oei oem oeo oer oet of- ofb ofc ofe off ofi ofm ofo ofr oft oib oic oie oif oii oim oio oir oit om- omb omc ome omf omi omm omo omr omt oo- oob ooc oof ooi oom ooo oor oot or- orb orc ore orf ori orm oro orr ort ot- otb otc ote otf oti otm oto otr ott rbb rbc rbe rbf rbi rbm rbo rbr rbt rcb rcc rce rcf rci rcm rco rcr rct re- reb rec ree ref rei rem reo rer ret rfb rfc rfe rff rfi rfm rfo rfr rft rib ric rie rif rii rim rio rir rit rmb rmc rme rmf rmi rmm rmo rmr rmt rob roc roe rof roi rom roo ror rot rrb rrc rrf rri rrm rrr rrt rtb rtc rte rtf rti rtm rto rtr rtt tbb tbc tbe tbf tbi tbm tbo tbr tbt tcb tcc tce tcf tci tcm tco tcr tct te- teb tec tee tef tei tem teo ter tet tfb tfc tfe tff tfi tfm tfo tfr tft tib tic tie tif tii tim tio tir tit tmb tmc tme tmf tmi tmm tmo tmr tmt to- tob toc toe tof toi tom too tor tot trb trc tre trf tri trm tro trr trt ttb ttc tte ttf tti ttm tto ttr ttt