bbb bbc bbe bbh bbn bbo bcb bcc bce bch bcn bco be- beb bec bee beh ben beo bhb bhc bhe bhh bho bnb bnc bne bnn bno bob boc boe boh bon boo c-- cbb cbc cbe cbh cbn cbo ccb ccc cce cch ccn cco ce- ceb cec cee ceh cen ceo ch- chb chc che chh chn cho cn- cnb cnc cne cnh cnn cno co- cob coc coe coh con coo ebb ebc ebe ebh ebn ebo ec- ecb ecc ece ech ecn eco eeb eec eee een eeo ehb ehc ehe ehh ehn eho en- enb enc ene enh enn eno eo- eob eoc eoe eoh eon eoo hbb hbc hbe hbh hbn hbo hcb hcc hce hch hcn hco he- heb hec hee heh hen heo hhb hhc hhe hhh hhn hho hnb hnc hne hnh hnn hno hob hoc hoe hoh hon hoo nbb nbc nbe nbn nbo ncb ncc nce nch ncn nco ne- neb nec nee neh nen neo nhb nhc nhe nhh nhn nnb nnc nne nnh nnn nno no- nob noc noe noh non noo ob- obb obc obe obh obn obo oc- ocb occ och ocn oco oeb oec oee oeh oen oeo ohc ohe ohh ohn oho on- onb onc one onh onn ono oo- oob ooc ooh oon ooo