-er bbb bbc bbe bbg bbh bbm bbn bbo bbr bcb bcc bce bcg bch bcm bcn bco bcr be- beb bec bee beg beh bem ben beo ber bgb bgc bge bgg bgh bgm bgn bgo bgr bhb bhc bhe bhg bhh bhm bho bhr bmb bmc bme bmg bmh bmm bmn bmo bmr bnb bnc bne bng bnn bno bnr bob boc boe bog boh bom bon boo bor brb bre brg brh brm brn bro brr c-- cbb cbc cbe cbg cbh cbm cbn cbo cbr ccb ccc cce ccg cch ccm ccn cco ccr ce- ceb cec cee ceg ceh cem cen ceo cer cgb cgc cge cgg cgh cgm cgn cgo cgr ch- chb chc che chg chh chm chn cho chr cmb cmc cme cmg cmh cmm cmn cmo cmr cn- cnb cnc cne cng cnh cnm cnn cno cnr co- cob coc coe cog coh com con coo cor crb crc cre crg crh crm crn cro crr ebb ebc ebe ebg ebh ebm ebn ebo ebr ec- ecb ecc ece ecg ech ecm ecn eco ecr eeb eec eee eeg eem een eeo eer egb egc ege egg egh egm egn ego egr ehb ehc ehe ehg ehh ehm ehn eho ehr em- emb emc eme emg emh emm emn emo emr en- enb enc ene eng enh enm enn eno enr eo- eob eoc eoe eog eoh eom eon eoo eor erb erc ere erg erh erm ern ero err gbc gbe gbg gbh gbm gbn gbo gbr gcb gcc gce gcg gch gcm gcn gco gcr ge- geb gec gee geg geh gem gen geo ger ggb ggc ggg ggh ggm ggn ggo ggr ghb ghc ghe ghg ghh ghn gho ghr gmb gmc gme gmg gmh gmm gmn gmo gmr gnb gnc gne gnm gnn gno gnr gob goc goe gog goh gom gon goo gor grb grc gre grg grh grm grn gro grr hbb hbc hbe hbg hbh hbm hbn hbo hbr hcb hcc hce hcg hch hcm hcn hco hcr he- heb hec hee heg heh hem hen heo her hgb hgc hge hgg hgh hgm hgn hgo hgr hhb hhc hhe hhg hhh hhm hhn hho hhr hmb hmc hme hmg hmh hmm hmo hmr hnb hnc hne hng hnh hnn hno hob hoc hoe hog hoh hom hon hoo hor hr- hrb hrc hre hrg hrh hrm hrn hro hrr m-o m-r mbb mbc mbe mbg mbh mbm mbo mbr mc- mcb mcc mce mcg mch mcm mcn mco mcr meb mec mee meg meh mem men meo mer mgb mgc mge mgh mgm mgn mgo mgr mhc mhg mhh mhm mhn mho mhr mmb mmc mme mmg mmh mmm mmn mmo mmr mnb mnc mne mng mnm mnn mno mnr mob moc moe mog moh mom mon moo mor mrb mrc mre mrg mrh mrm mrn mro mrr nbb nbc nbe nbg nbm nbn nbo nbr ncb ncc nce ncg nch ncm ncn nco ncr ne- neb nec nee neg neh nem nen neo ner ngb ngc nge ngg ngh ngm ngn ngo nhb nhc nhe nhg nhh nhm nhn nhr nmb nmc nme nmg nmh nmm nmn nmo nmr nnb nnc nne nng nnh nnm nnn nno no- nob noc noe nog noh nom non noo nor nrb nrc nre nrg nrm nrn nro nrr ob- obb obc obe obg obh obm obn obo obr oc- ocb occ ocg och ocm ocn oco ocr oeb oec oee oeg oeh oem oen oeo oer ogc oge ogg ogh ogn ogo ohc ohe ohg ohh ohm ohn oho ohr om- omb omc ome omg omh omm omn omo omr on- onb onc one ong onh onn ono onr oo- oob ooc oog ooh oom oon ooo oor or- orb orc ore org orh orm orn oro orr rbb rbc rbe rbg rbh rbm rbn rbo rbr rcb rcc rce rcg rch rcm rcn rco rcr re- reb rec ree reg reh rem ren reo rer rgb rgc rge rgg rgh rgn rgo rgr rh- rhb rhc rhe rhg rhh rhm rhn rho rhr rmb rmc rme rmg rmh rmm rmn rmo rmr rnb rnc rng rnh rnm rnn rno rnr rob roc roe rog roh rom ron roo ror rrb rrc rrg rrh rrm rrn rrr