-er b-u bbb bbc bbe bbr bbs bbt bbu bcb bcc bce bcj bcr bcs bct bcu be- beb bec bee ber bes bet beu bjc bjj bjr bjs bjt bju brb bre brj brr brs brt bru bsb bsc bse bsj bsr bss bst bsu btb btc bte btr bts btt btu bub buc bue buj bur bus but buu c-- c-j cbb cbc cbe cbj cbr cbs cbt cbu ccb ccc cce ccj ccr ccs cct ccu ce- ceb cec cee cej cer ces cet ceu cjb cjc cjr cjs crb crc cre crj crr crs crt cru csb csc cse csj csr css cst csu ctb ctc cte ctr cts ctt ctu cub cuc cue cur cus cut cuu ebb ebc ebe ebj ebr ebs ebt ebu ec- ecb ecc ece ecj ecr ecs ect ecu eeb eec eee eer ees eet ejc ejt eju erb erc ere err ers ert eru es- esb esc ese esr ess est esu etb etc ete etj etr ets ett etu eu- eub euc eue euj eur eus eut jbc jbj jbr jbs jbt jbu jcb jcc jce jcr jcs jct jcu jeb jec jee jej jer jes jet jeu jjb jjc jjj jjr jjs jju jrb jrc jrr jrs jrt jsb jsc jse jsj jsr jss jst jsu jtb jtc jte jtr jts jtt jtu jub jue jur jus jut rbb rbc rbe rbr rbs rbt rbu rcb rcc rce rcj rcr rcs rct rcu re- reb rec ree rer res ret reu rjc rjr rrb rrc rrr rrs rrt rru rsb rsc rse rsj rsr rss rst rsu rtb rtc rte rtj rtr rts rtt rtu rub ruc rue rur rus rut ruu sbb sbc sbe sbj sbr sbs sbt sbu scb scc sce scj scr scs sct scu se- seb sec see sej ser ses set seu sjb sjc sje sjj sjr sjs sjt sju sr- srb src sre srj srr srs srt ss- ssb ssc sse ssj ssr sss sst ssu stb stc ste stj str sts stt stu sub suc sue sur sus sut suu tbb tbc tbe tbj tbr tbs tbt tbu tcb tcc tce tcj tcr tcs tct tcu te- teb tec tee tej ter tes tet teu tjc tje tjr tjs tju trb trc tre trr trs trt tru tsb tsc tse tsj tsr tss tst tsu ttb ttc tte ttr tts ttt ttu tub tuc tue tuj tur tus tut tuu ubb ubc ube ubr ubs ubt ubu ucb ucc uce ucj ucr ucs uct ucu ueb uec uee uer ues uet ujc ujs ur- urb urc ure urr urs urt uru usb usc use usj usr uss ust usu utb utc ute utj utr uts utt utu uuc uue uur uus uut uuu