-ey bbb bbc bbe bbh bbk bbn bbo bby bcb bcc bce bch bck bcn bco bcy be- beb bec bee beh bek ben beo bey bhb bhc bhe bhh bhk bho bkb bkc bke bkk bkn bko bnb bnc bne bnk bnn bno bob boc boe boh bok bon boo boy by- byc bye byh byk byn byo c-- cbb cbc cbe cbh cbk cbn cbo cby ccb ccc cce cch cck ccn cco ce- ceb cec cee ceh cek cen ceo cey ch- chb chc che chh chk chn cho chy ckb ckc ckh cko cky cn- cnb cnc cne cnh cnn cno cny co- cob coc coe coh cok con coo coy cyb cyc cye cyk cyn cyo ebb ebc ebe ebh ebk ebn ebo eby ec- ecb ecc ece ech eck ecn eco eeb eec eee eek een eeo eey ehb ehc ehe ehh ehn eho ekb ekc eke ekh eko eky en- enb enc ene enh enk enn eno eny eo- eob eoc eoe eoh eok eon eoo eyc eye eyn eyo hbb hbc hbe hbh hbk hbn hbo hby hcb hcc hce hch hck hcn hco hcy he- heb hec hee heh hek hen heo hey hhb hhc hhe hhh hhk hhn hho hhy hkb hkh hkk hkn hko hnb hnc hne hnh hnk hnn hno hny hob hoc hoe hoh hok hon hoo hoy hy- hyb hyc hye hyh hyn hyo hyy kbb kbc kbe kbh kbk kbn kbo kcb kcc kce kch kck kcn ke- keb kec kee keh kek ken keo key khe khh khk khn kho kkb kkc kke kkh kkk kkn kky kn- knc kne knk knn kno kob koc koe koh kok kon koo koy kyc kye kyn kyo nbb nbc nbe nbk nbn nbo ncb ncc nce nch nck ncn nco ne- neb nec nee neh nek nen neo ney nhb nhc nhe nhh nhk nhn nhy nkc nke nkk nkn nko nky nnb nnc nne nnh nnk nnn nno no- nob noc noe noh nok non noo noy nyc nye nyk nyn nyo nyy ob- obb obc obe obh obk obn obo oby oc- ocb occ och ock ocn oco oeb oec oee oeh oen oeo oey ohc ohe ohh ohn oho okb okc oke okk oko on- onb onc one onh onk onn ono ony oo- oob ooc ooh ook oon ooo oye oyo ybc ybe yby ycc yce ych yco ycy yeb yec yee yeh yek yen yeo yey yhc yhe ykk ykn yne ynk ynn yny yob yoc yoe yok yon yoo yoy yyb yyc yye yyy