-er -ic -ol bbb bbc bbe bbf bbi bbl bbo bbr bcb bcc bce bcf bci bcl bco bcr be- beb bec bee bef bei bel beo ber bfb bfc bfe bff bfi bfl bfo bfr bi- bib bic bie bif bii bil bio bir blb blc ble blf bli bll blo blr bob boc boe bof boi bol boo bor brb bre brf bri brl bro brr c-- cbb cbc cbe cbf cbi cbl cbo cbr ccb ccc cce ccf cci ccl cco ccr ce- ceb cec cee cef cei cel ceo cer cfb cfc cfe cff cfi cfl cfo cfr ci- cib cic cie cif cii cil cio cir cl- clb clc cle clf cli cll clo clr co- cob coc coe cof coi col coo cor crb crc cre crf cri crl cro crr ebb ebc ebe ebf ebi ebl ebo ebr ec- ecb ecc ece ecf eci ecl eco ecr eeb eec eee eef eel eeo eer ef- efb efc efe eff efi efl efo efr eib eic eie eif eii eil eio eir elb elc ele elf eli ell elo elr eo- eob eoc eoe eof eoi eol eoo eor erb erc ere erf eri erl ero err fbb fbc fbe fbf fbi fbl fbo fbr fcb fcc fce fcf fci fcl fco fcr feb fec fee fef fei fel feo fer ffc ffe fff ffi ffl ffo ffr fib fic fie fif fii fil fir flb flc fle flf fli fll flo flr fob foc foe fof foi fol foo for frb frc fre frf fri frl fro frr i-f ibb ibc ibe ibf ibi ibl ibo ibr icb icc ice icf ici icl ico icr ie- iec iee ief iei iel ier ifb ifc ife iff ifi ifl ifo ifr iib iic iie iif iii iil iio iir il- ilb ilc ile ilf ili ill ilo ilr io- iob ioc ioe iof ioi iol ioo ior ir- irb irc ire irf iri irl iro irr lbb lbc lbe lbf lbi lbl lbo lbr lcb lcc lce lcf lci lcl lco lcr leb lec lee lef lei lel leo ler lfb lfc lfe lff lfi lfl lfo lfr lib lic lie lif lii lil lio lir llb llc lle llf lli lll llo llr lob loc loe lof loi lol loo lor lrb lrc lrf lri lro lrr o-i ob- obb obc obe obf obi obl obo obr oc- ocb occ ocf oci ocl oco ocr oeb oec oee oef oei oel oeo oer of- ofb ofc ofe off ofi ofl ofo ofr oib oic oie oif oii oil oio oir olb olc ole olf oli oll olo oo- oob ooc oof ooi ool ooo oor or- orb orc ore orf ori orl oro orr rbb rbc rbe rbf rbi rbl rbo rbr rcb rcc rce rcf rci rcl rco rcr re- reb rec ree ref rei rel reo rer rfb rfc rfe rff rfi rfl rfo rfr rib ric rie rif rii ril rio rir rlc rle rlf rli rll rlo rlr rob roc roe rof roi rol roo ror rrb rrc rrf rri rrl rrr