-er bbb bbc bbe bbm bbn bbo bbr bcb bcc bce bcj bcm bcn bco bcr be- beb bec bee bem ben beo ber bjc bjj bjm bjn bjr bmb bmc bme bmj bmm bmn bmo bmr bnb bnc bne bnj bnn bno bnr bob boc boe boj bom bon boo bor brb bre brj brm brn bro brr c-- c-j cbb cbc cbe cbj cbm cbn cbo cbr ccb ccc cce ccj ccm ccn cco ccr ce- ceb cec cee cej cem cen ceo cer cjb cjc cjr cmb cmc cme cmj cmm cmn cmo cmr cn- cnb cnc cne cnj cnm cnn cno cnr co- cob coc coe coj com con coo cor crb crc cre crj crm crn cro crr ebb ebc ebe ebj ebm ebn ebo ebr ec- ecb ecc ece ecj ecm ecn eco ecr eeb eec eee eem een eeo eer ejc ejo em- emb emc eme emm emn emo emr en- enb enc ene enm enn eno enr eo- eob eoc eoe eom eon eoo eor erb erc ere erm ern ero err jbc jbj jbm jbo jbr jcb jcc jce jcm jco jcr jeb jec jee jej jem jen jeo jer jjb jjc jjj jjr jmb jmc jme jmj jmm jmn jmo jmr jnc jne jnj jnn jno jnr job joc joe joj jom jon joo jor jrb jrc jrm jrn jro jrr m-o m-r mbb mbc mbe mbj mbm mbo mbr mc- mcb mcc mce mcm mcn mco mcr meb mec mee mej mem men meo mer mjb mjc mje mjj mjm mjr mmb mmc mme mmj mmm mmn mmo mmr mnb mnc mne mnj mnm mnn mno mnr mob moc moe mom mon moo mor mrb mrc mre mrj mrm mrn mro mrr nbb nbc nbe nbm nbn nbo nbr ncb ncc nce ncm ncn nco ncr ne- neb nec nee nej nem nen neo ner njc nje njm njn nmb nmc nme nmm nmn nmo nmr nnb nnc nne nnm nnn nno no- nob noc noe noj nom non noo nor nrb nrc nre nrj nrm nrn nro nrr ob- obb obc obe obj obm obn obo obr oc- ocb occ ocj ocm ocn oco ocr oeb oec oee oem oen oeo oer ojb ojc oje ojm ojo om- omb omc ome omj omm omn omo omr on- onb onc one onj onn ono onr oo- oob ooc oom oon ooo oor or- orb orc ore orm orn oro orr rbb rbc rbe rbm rbn rbo rbr rcb rcc rce rcj rcm rcn rco rcr re- reb rec ree rem ren reo rer rjc rjm rjr rmb rmc rme rmm rmn rmo rmr rnb rnc rnm rnn rno rnr rob roc roe roj rom ron roo ror rrb rrc rrm rrn rrr