bbb bbc bbd bbe bbk bbo bcb bcc bcd bce bcj bck bco bdb bdc bdd bde bdj bdk bdo be- beb bec bed bee bek beo bjc bjd bjj bjk bkb bkc bke bkk bko bob boc bod boe boj bok boo c-- c-j cbb cbc cbd cbe cbj cbk cbo ccb ccc ccd cce ccj cck cco cdb cdc cdd cde cdj cdk cdo ce- ceb cec ced cee cej cek ceo cjb cjc cjd cjk ckb ckc ckd cko co- cob coc cod coe coj cok coo dbb dbc dbd dbe dbk dbo dcb dcc dcd dce dck dco ddb ddc ddd dde ddk ddo de- deb dec ded dee dej dek deo dj- djb djc djd dje djk djo dkb dkc dke dkk dko dob doc dod doe doj dok doo ebb ebc ebd ebe ebj ebk ebo ec- ecb ecc ecd ece ecj eck eco ed- edb edc edd ede edj edk edo eeb eec eed eee eek eeo ejc ejd ejo ekb ekc ekd eke eko eo- eob eoc eod eoe eok eoo j-d jbc jbj jbk jbo jcb jcc jcd jce jck jco jdb jdc jde jdo jeb jec jed jee jej jek jeo jjb jjc jjj jjk jkb jkk jko job joc jod joe joj jok joo kbb kbc kbd kbe kbk kbo kcb kcc kcd kce kck kdb kdc kde kdk kdo ke- keb kec ked kee kek keo kjb kjc kje kkb kkc kke kkk kob koc kod koe kok koo ob- obb obc obd obe obj obk obo oc- ocb occ ocd ocj ock oco odb odc odd ode odo oeb oec oed oee oeo ojb ojc ojd oje ojo okb okc okd oke okj okk oko oo- oob ooc ood ook ooo