b-u bbb bbc bbe bbn bbo bbs bbt bbu bbx bcb bcc bce bcn bco bcs bct bcu bcx be- beb bec bee ben beo bes bet beu bex bnb bnc bne bnn bno bns bnt bnu bnx bob boc boe bon boo bos bot bou box bsb bsc bse bsn bso bss bst bsu bsx btb btc bte btn bto bts btt btu btx bub buc bue bun buo bus but buu bux bxb bxn bxo bxx c-- cbb cbc cbe cbn cbo cbs cbt cbu cbx ccb ccc cce ccn cco ccs cct ccu ccx ce- ceb cec cee cen ceo ces cet ceu cex cn- cnb cnc cne cnn cno cns cnt cnu cnx co- cob coc coe con coo cos cot cou cox csb csc cse csn cso css cst csu csx ctb ctc cte ctn cto cts ctt ctu ctx cub cuc cue cun cuo cus cut cuu cxc cxo cxs cxt cxx ebb ebc ebe ebn ebo ebs ebt ebu ebx ec- ecb ecc ece ecn eco ecs ect ecu ecx eeb eec eee een eeo ees eet eex en- enb enc ene enn eno ens ent enu eo- eob eoc eoe eon eoo eos eot eou es- esb esc ese esn eso ess est esu esx etb etc ete etn eto ets ett etu etx eu- eub euc eue eun eus eut eux ex- exc exe exo exs ext exu exx nbb nbc nbe nbn nbo nbs nbt nbu nbx ncb ncc nce ncn nco ncs nct ncu ncx ne- neb nec nee nen neo nes net neu nex nnb nnc nne nnn nno nns nnt nnu no- nob noc noe non noo nos not nou nox nsb nsc nse nsn nso nss nst nsu nsx ntb ntc nte ntn nto nts ntt ntu ntx nub nuc nue nun nuo nus nut nuu nux nxc nxt ob- obb obc obe obn obo obs obt obu obx oc- ocb occ ocn oco ocs oct ocu ocx oeb oec oee oen oeo oes oet oex on- onb onc one onn ono ons ont onu onx oo- oob ooc oon ooo oos oot oox os- osb osc ose osn oso oss ost osu osx ot- otb otc ote otn oto ots ott otu ou- ouc oue oun ouo ous out ox- oxb oxc oxn oxo oxt oxx sbb sbc sbe sbn sbo sbs sbt sbu sbx scb scc sce scn sco scs sct scu scx se- seb sec see sen seo ses set seu sex snb snc sne snn sno sns snt snu sob soc soe son soo sos sot sou sox ss- ssb ssc sse ssn sso sss sst ssu ssx stb stc ste stn sto sts stt stu stx sub suc sue sun suo sus sut suu sux sxc sxn sxs sxt sxu t-x tbb tbc tbe tbn tbo tbs tbt tbu tcb tcc tce tcn tco tcs tct tcu tcx te- teb tec tee ten teo tes tet teu tex tnb tnc tne tnn tno tns tnt tnx to- tob toc toe ton too tos tot tou tox tsb tsc tse tsn tso tss tst tsu tsx ttb ttc tte ttn tto tts ttt ttu ttx tub tuc tue tun tuo tus tut tuu tux txe txn txs txt txu ubb ubc ube ubn ubo ubs ubt ubu ubx ucb ucc uce ucn uco ucs uct ucu ueb uec uee uen ues uet un- unb unc une unn uno uns unt unu unx uob uoc uoe uon uoo uos uot uox usb usc use usn uso uss ust usu usx utb utc ute utn uto uts utt utu utx uuc uue uun uus uut uuu uxb uxc uxo uxt uxu xbc xbe xbx xcb xcx xee xen xes xet xeu xex xnc xno xns xnu xoc xon xoo xos xot xox xsb xsc xss xst xtc xts xtx xue xun xus xxo xxx