-er -ic bbb bbc bbe bbf bbi bbn bbo bbr bbt bcb bcc bce bcf bci bcn bco bcr bct be- beb bec bee bef bei ben beo ber bet bfb bfc bfe bff bfi bfn bfo bfr bft bi- bib bic bie bif bii bin bio bir bit bnb bnc bne bnf bni bnn bno bnr bnt bob boc boe bof boi bon boo bor bot brb bre brf bri brn bro brr brt btb btc bte btf bti btn bto btr btt c-- cbb cbc cbe cbf cbi cbn cbo cbr cbt ccb ccc cce ccf cci ccn cco ccr cct ce- ceb cec cee cef cei cen ceo cer cet cfb cfc cfe cff cfi cfn cfo cfr cft ci- cib cic cie cif cii cin cio cir cit cn- cnb cnc cne cnf cni cnn cno cnr cnt co- cob coc coe cof coi con coo cor cot crb crc cre crf cri crn cro crr crt ctb ctc cte ctf cti ctn cto ctr ctt ebb ebc ebe ebf ebi ebn ebo ebr ebt ec- ecb ecc ece ecf eci ecn eco ecr ect eeb eec eee eef een eeo eer eet ef- efb efc efe eff efi efo efr eft eib eic eie eif eii ein eio eir eit en- enb enc ene enf eni enn eno enr ent eo- eob eoc eoe eof eoi eon eoo eor eot erb erc ere erf eri ern ero err ert etb etc ete etf eti etn eto etr ett fbb fbc fbe fbf fbi fbn fbo fbr fbt fcb fcc fce fcf fci fcn fco fcr fct feb fec fee fef fei fen feo fer fet ffc ffe fff ffi ffn ffo ffr fft fib fic fie fif fii fin fir fit fnb fnc fne fnf fni fnn fnr fnt fob foc foe fof foi fon foo for fot frb frc fre frf fri frn fro frr frt ftb ftc fte ftf fti ftn fto ftr ftt i-f ibb ibc ibe ibf ibi ibn ibo ibr ibt icb icc ice icf ici icn ico icr ict ie- iec iee ief iei ien ier iet ifb ifc ife iff ifi ifn ifo ifr ift iib iic iie iif iii iin iio iir iit in- inb inc ine inf ini inn ino inr int io- iob ioc ioe iof ioi ion ioo ior iot ir- irb irc ire irf iri irn iro irr irt itb itc ite itf iti itn ito itt n-i nbb nbc nbe nbf nbi nbn nbo nbr nbt ncb ncc nce ncf nci ncn nco ncr nct ne- neb nec nee nef nei nen neo ner net nfb nfc nfe nff nfi nfn nfo nfr nft nib nic nie nif nii nin nio nir nit nnb nnc nne nnf nni nnn nno nnt no- nob noc noe nof noi non noo nor not nrb nrc nre nrf nri nrn nro nrr nrt ntb ntc nte ntf nti ntn nto ntr ntt o-i ob- obb obc obe obf obi obn obo obr obt oc- ocb occ ocf oci ocn oco ocr oct oeb oec oee oef oei oen oeo oer oet of- ofb ofc ofe off ofi ofn ofo ofr oft oib oic oie oif oii oin oio oir oit on- onb onc one onf oni onn ono onr ont oo- oob ooc oof ooi oon ooo oor oot or- orb orc ore orf ori orn oro orr ort ot- otb otc ote otf oti otn oto otr ott rbb rbc rbe rbf rbi rbn rbo rbr rbt rcb rcc rce rcf rci rcn rco rcr rct re- reb rec ree ref rei ren reo rer ret rfb rfc rfe rff rfi rfn rfo rfr rft rib ric rie rif rii rin rio rir rit rnb rnc rni rnn rno rnr rnt rob roc roe rof roi ron roo ror rot rrb rrc rrf rri rrn rrr rrt rtb rtc rte rtf rti rtn rto rtr rtt tbb tbc tbe tbf tbi tbn tbo tbr tbt tcb tcc tce tcf tci tcn tco tcr tct te- teb tec tee tef tei ten teo ter tet tfb tfc tfe tff tfi tfn tfo tfr tft tib tic tie tif tii tin tio tir tit tnb tnc tne tnf tni tnn tno tnr tnt to- tob toc toe tof toi ton too tor tot trb trc tre trf tri trn tro trr trt ttb ttc tte ttf tti ttn tto ttr ttt