-th bbb bbc bbe bbg bbh bbn bbo bbt bcb bcc bce bcg bch bcn bco bct be- beb bec bee beg beh ben beo bet bgb bgc bge bgg bgh bgn bgo bgt bhb bhc bhe bhg bhh bho bht bnb bnc bne bng bnn bno bnt bob boc boe bog boh bon boo bot btb btc bte btg bth btn bto btt c-- cbb cbc cbe cbg cbh cbn cbo cbt ccb ccc cce ccg cch ccn cco cct ce- ceb cec cee ceg ceh cen ceo cet cgb cgc cge cgg cgh cgn cgo cgt ch- chb chc che chg chh chn cho cht cn- cnb cnc cne cng cnh cnn cno cnt co- cob coc coe cog coh con coo cot ctb ctc cte ctg cth ctn cto ctt ebb ebc ebe ebg ebh ebn ebo ebt ec- ecb ecc ece ecg ech ecn eco ect eeb eec eee eeg een eeo eet egb egc ege egg egh egn ego egt ehb ehc ehe ehg ehh ehn eho eht en- enb enc ene eng enh enn eno ent eo- eob eoc eoe eog eoh eon eoo eot etb etc ete etg eth etn eto ett gbc gbe gbg gbh gbn gbo gbt gcb gcc gce gcg gch gcn gco gct ge- geb gec gee geg geh gen geo get ggb ggc ggg ggh ggn ggo ggt ghb ghc ghe ghg ghh ghn gho ght gnb gnc gne gnn gno gnt gob goc goe gog goh gon goo got gtb gtc gte gtg gth gtn gto gtt hbb hbc hbe hbg hbh hbn hbo hbt hcb hcc hce hcg hch hcn hco hct he- heb hec hee heg heh hen heo het hgb hgc hge hgg hgh hgn hgo hgt hhb hhc hhe hhg hhh hhn hho hht hnb hnc hne hng hnh hnn hno hnt hob hoc hoe hog hoh hon hoo hot htb htc hte htg hth htn hto htt nbb nbc nbe nbg nbn nbo nbt ncb ncc nce ncg nch ncn nco nct ne- neb nec nee neg neh nen neo net ngb ngc nge ngg ngh ngn ngo ngt nhb nhc nhe nhg nhh nhn nht nnb nnc nne nng nnh nnn nno nnt no- nob noc noe nog noh non noo not ntb ntc nte ntg nth ntn nto ntt ob- obb obc obe obg obh obn obo obt oc- ocb occ ocg och ocn oco oct oeb oec oee oeg oeh oen oeo oet ogc oge ogg ogh ogn ogo ogt ohc ohe ohg ohh ohn oho oht on- onb onc one ong onh onn ono ont oo- oob ooc oog ooh oon ooo oot ot- otb otc ote otg oth otn oto ott tbb tbc tbe tbg tbh tbn tbo tbt tcb tcc tce tcg tch tcn tco tct te- teb tec tee teg teh ten teo tet tgb tgc tge tgg tgh tgn tgo tgt th- thb thc the thg thh thn tho tht tnb tnc tne tng tnh tnn tno tnt to- tob toc toe tog toh ton too tot ttb ttc tte ttg tth ttn tto ttt