bbb bbc bbd bbk bbn bbo bcb bcc bcd bcj bck bcn bco bdb bdc bdd bdj bdk bdo bjc bjd bjj bjk bjn bkb bkc bkk bkn bko bnb bnc bnd bnj bnk bnn bno bob boc bod boj bok bon boo c-- c-j cbb cbc cbd cbj cbk cbn cbo ccb ccc ccd ccj cck ccn cco cdb cdc cdd cdj cdk cdn cdo cjb cjc cjd cjk ckb ckc ckd cko cn- cnb cnc cnd cnj cnn cno co- cob coc cod coj cok con coo dbb dbc dbd dbk dbn dbo dcb dcc dcd dck dcn dco ddb ddc ddd ddk ddn ddo dj- djb djc djd djk djo dkb dkc dkk dko dnb dnc dnd dnj dnk dnn dno dob doc dod doj dok don doo j-d jbc jbj jbk jbo jcb jcc jcd jck jco jdb jdc jdn jdo jjb jjc jjj jjk jkb jkk jkn jko jnc jnd jnj jnn jno job joc jod joj jok jon joo kbb kbc kbd kbk kbn kbo kcb kcc kcd kck kcn kdb kdc kdk kdo kjb kjc kkb kkc kkk kkn kn- knc knd knk knn kno kob koc kod kok kon koo nbb nbc nbd nbk nbn nbo ncb ncc ncd nck ncn nco ndb ndc ndd ndk ndn ndo njc njk njn nkc nkj nkk nkn nko nnb nnc nnk nnn nno no- nob noc nod noj nok non noo ob- obb obc obd obj obk obn obo oc- ocb occ ocd ocj ock ocn oco odb odc odd odn odo ojb ojc ojd ojo okb okc okd okj okk oko on- onb onc ond onj onk onn ono oo- oob ooc ood ook oon ooo