bbb bbc bbe bbg bbm bbo bbs bcb bcc bce bcg bcm bco bcs be- beb bec bee beg bem beo bes bgb bgc bge bgg bgm bgo bgs bmb bmc bme bmg bmm bmo bms bob boc boe bog bom boo bos bsb bsc bse bsg bsm bso bss c-- cbb cbc cbe cbg cbm cbo cbs ccb ccc cce ccg ccm cco ccs ce- ceb cec cee ceg cem ceo ces cgb cgc cge cgg cgm cgo cgs cmb cmc cme cmg cmm cmo cms co- cob coc coe cog com coo cos csb csc cse csg csm cso css ebb ebc ebe ebg ebm ebo ebs ec- ecb ecc ece ecg ecm eco ecs eeb eec eee eeg eem eeo ees egb egc ege egg egm ego egs em- emb emc eme emg emm emo ems eo- eob eoc eoe eog eom eoo eos es- esb esc ese esg esm eso ess gbc gbe gbg gbm gbo gbs gcb gcc gce gcg gcm gco gcs ge- geb gec gee geg gem geo ges ggb ggc ggg ggm ggo ggs gmb gmc gme gmg gmm gmo gms gob goc goe gog gom goo gos gsb gsc gse gsg gsm gso gss m-o mbb mbc mbe mbg mbm mbo mbs mc- mcb mcc mce mcg mcm mco mcs meb mec mee meg mem meo mes mgb mgc mge mgm mgo mgs mmb mmc mme mmg mmm mmo mms mob moc moe mog mom moo mos msb msc mse msg msm mso mss ob- obb obc obe obg obm obo obs oc- ocb occ ocg ocm oco ocs oeb oec oee oeg oem oeo oes ogc oge ogg ogo ogs om- omb omc ome omg omm omo oms oo- oob ooc oog oom ooo oos os- osb osc ose osg osm oso oss sbb sbc sbe sbg sbm sbo sbs scb scc sce scg scm sco scs se- seb sec see seg sem seo ses sgb sgc sge sgg sgm sgo sgs smb smc sme smg smm smo sms sob soc soe sog som soo sos ss- ssb ssc sse ssg ssm sso sss