bbb bbc bbd bbe bbl bbn bbt bcb bcc bcd bce bcl bcn bct bdb bdc bdd bde bdl bdt be- beb bec bed bee bel ben bet blb blc bld ble bll bln blt bnb bnc bnd bne bnl bnn bnt btb btc btd bte btl btn btt c-- cbb cbc cbd cbe cbl cbn cbt ccb ccc ccd cce ccl ccn cct cdb cdc cdd cde cdl cdn cdt ce- ceb cec ced cee cel cen cet cl- clb clc cld cle cll cln clt cn- cnb cnc cnd cne cnl cnn cnt ctb ctc ctd cte ctl ctn ctt dbb dbc dbd dbe dbl dbn dbt dcb dcc dcd dce dcl dcn dct ddb ddc ddd dde ddl ddn ddt de- deb dec ded dee del den det dl- dlb dlc dld dle dll dlt dnb dnc dnd dne dnl dnn dnt dtb dtc dtd dte dtl dtn dtt ebb ebc ebd ebe ebl ebn ebt ec- ecb ecc ecd ece ecl ecn ect ed- edb edc edd ede edl edn edt eeb eec eed eee eel een eet elb elc eld ele ell eln elt en- enb enc end ene enl enn ent etb etc etd ete etl etn ett lbb lbc lbd lbe lbl lbt lcb lcc lcd lce lcl lcn lct ldb ldc ldd lde ldl ldn ldt leb lec led lee lel len let llb llc lld lle lll lln llt lnb lnc lnd lne lnl lnn lnt ltb ltc ltd lte ltl ltt nbb nbc nbd nbe nbl nbn nbt ncb ncc ncd nce ncl ncn nct ndb ndc ndd nde ndl ndn ndt ne- neb nec ned nee nel nen net nlb nlc nld nle nll nln nlt nnb nnc nne nnl nnn nnt ntb ntc ntd nte ntn ntt tbb tbc tbd tbe tbl tbn tbt tcb tcc tcd tce tcl tcn tct tdb tdc tdd tde tdl tdn tdt te- teb tec ted tee tel ten tet tlc tld tle tll tln tlt tnb tnc tnd tne tnl tnn tnt ttb ttc ttd tte ttl ttn ttt