-er bbb bbc bbe bbn bbo bbr bbt bcb bcc bce bcj bcn bco bcr bct be- beb bec bee ben beo ber bet bjc bjj bjn bjr bjt bnb bnc bne bnj bnn bno bnr bnt bob boc boe boj bon boo bor bot brb bre brj brn bro brr brt btb btc bte btn bto btr btt c-- c-j cbb cbc cbe cbj cbn cbo cbr cbt ccb ccc cce ccj ccn cco ccr cct ce- ceb cec cee cej cen ceo cer cet cjb cjc cjr cn- cnb cnc cne cnj cnn cno cnr cnt co- cob coc coe coj con coo cor cot crb crc cre crj crn cro crr crt ctb ctc cte ctn cto ctr ctt ebb ebc ebe ebj ebn ebo ebr ebt ec- ecb ecc ece ecj ecn eco ecr ect eeb eec eee een eeo eer eet ejc ejo ejt en- enb enc ene enn eno enr ent eo- eob eoc eoe eon eoo eor eot erb erc ere ern ero err ert etb etc ete etj etn eto etr ett jbc jbj jbo jbr jbt jcb jcc jce jco jcr jct jeb jec jee jej jen jeo jer jet jjb jjc jjj jjr jnc jne jnj jnn jno jnr jnt job joc joe joj jon joo jor jot jrb jrc jrn jro jrr jrt jtb jtc jte jtn jtr jtt nbb nbc nbe nbn nbo nbr nbt ncb ncc nce ncn nco ncr nct ne- neb nec nee nej nen neo ner net njc nje njn nnb nnc nne nnn nno nnt no- nob noc noe noj non noo nor not nrb nrc nre nrj nrn nro nrr nrt ntb ntc nte ntn nto ntr ntt ob- obb obc obe obj obn obo obr obt oc- ocb occ ocj ocn oco ocr oct oeb oec oee oen oeo oer oet ojb ojc oje ojo on- onb onc one onj onn ono onr ont oo- oob ooc oon ooo oor oot or- orb orc ore orn oro orr ort ot- otb otc ote otn oto otr ott rbb rbc rbe rbn rbo rbr rbt rcb rcc rce rcj rcn rco rcr rct re- reb rec ree ren reo rer ret rjc rjr rnb rnc rnn rno rnr rnt rob roc roe roj ron roo ror rot rrb rrc rrn rrr rrt rtb rtc rte rtj rtn rto rtr rtt tbb tbc tbe tbj tbn tbo tbr tbt tcb tcc tce tcj tcn tco tcr tct te- teb tec tee tej ten teo ter tet tjc tje tjo tjr tnb tnc tne tnn tno tnr tnt to- tob toc toe toj ton too tor tot trb trc tre trn tro trr trt ttb ttc tte ttn tto ttr ttt