-er -ic bbb bbc bbe bbf bbi bbl bbr bbt bcb bcc bce bcf bci bcl bcr bct be- beb bec bee bef bei bel ber bet bfb bfc bfe bff bfi bfl bfr bft bi- bib bic bie bif bii bil bir bit blb blc ble blf bli bll blr blt brb bre brf bri brl brr brt btb btc bte btf bti btl btr btt c-- cbb cbc cbe cbf cbi cbl cbr cbt ccb ccc cce ccf cci ccl ccr cct ce- ceb cec cee cef cei cel cer cet cfb cfc cfe cff cfi cfl cfr cft ci- cib cic cie cif cii cil cir cit cl- clb clc cle clf cli cll clr clt crb crc cre crf cri crl crr crt ctb ctc cte ctf cti ctl ctr ctt ebb ebc ebe ebf ebi ebl ebr ebt ec- ecb ecc ece ecf eci ecl ecr ect eeb eec eee eef eel eer eet ef- efb efc efe eff efi efl efr eft eib eic eie eif eii eil eir eit elb elc ele elf eli ell elr elt erb erc ere erf eri erl err ert etb etc ete etf eti etl etr ett fbb fbc fbe fbf fbi fbl fbr fbt fcb fcc fce fcf fci fcl fcr fct feb fec fee fef fei fel fer fet ffc ffe fff ffi ffl ffr fft fib fic fie fif fii fil fir fit flb flc fle flf fli fll flr flt frb frc fre frf fri frl frr frt ftb ftc fte ftf fti ftl ftr ftt i-f ibb ibc ibe ibf ibi ibl ibr ibt icb icc ice icf ici icl icr ict ie- iec iee ief iei iel ier iet ifb ifc ife iff ifi ifl ifr ift iib iic iie iif iii iil iir iit il- ilb ilc ile ilf ili ill ilr ilt ir- irb irc ire irf iri irl irr irt itb itc ite itf iti itl itt lbb lbc lbe lbf lbi lbl lbr lbt lcb lcc lce lcf lci lcl lcr lct leb lec lee lef lei lel ler let lfb lfc lfe lff lfi lfl lfr lft lib lic lie lif lii lil lir lit llb llc lle llf lli lll llr llt lrb lrc lrf lri lrr lrt ltb ltc lte ltf lti ltl ltr ltt rbb rbc rbe rbf rbi rbl rbr rbt rcb rcc rce rcf rci rcl rcr rct re- reb rec ree ref rei rel rer ret rfb rfc rfe rff rfi rfl rfr rft rib ric rie rif rii ril rir rit rlc rle rlf rli rll rlr rlt rrb rrc rrf rri rrl rrr rrt rtb rtc rte rtf rti rtl rtr rtt tbb tbc tbe tbf tbi tbl tbr tbt tcb tcc tce tcf tci tcl tcr tct te- teb tec tee tef tei tel ter tet tfb tfc tfe tff tfi tfl tfr tft tib tic tie tif tii til tir tit tlc tle tlf tli tll tlr tlt trb trc tre trf tri trl trr trt ttb ttc tte ttf tti ttl ttr ttt