-er -ic -ji bbb bbc bbe bbi bbo bbr bbs bbt bcb bcc bce bci bcj bco bcr bcs bct be- beb bec bee bei beo ber bes bet bi- bib bic bie bii bij bio bir bis bit bjc bji bjj bjr bjs bjt bob boc boe boi boj boo bor bos bot brb bre bri brj bro brr brs brt bsb bsc bse bsi bsj bso bsr bss bst btb btc bte bti bto btr bts btt c-- c-j cbb cbc cbe cbi cbj cbo cbr cbs cbt ccb ccc cce cci ccj cco ccr ccs cct ce- ceb cec cee cei cej ceo cer ces cet ci- cib cic cie cii cij cio cir cis cit cjb cjc cjr cjs co- cob coc coe coi coj coo cor cos cot crb crc cre cri crj cro crr crs crt csb csc cse csi csj cso csr css cst ctb ctc cte cti cto ctr cts ctt ebb ebc ebe ebi ebj ebo ebr ebs ebt ec- ecb ecc ece eci ecj eco ecr ecs ect eeb eec eee eeo eer ees eet eib eic eie eii eij eio eir eis eit ejc eji ejo ejt eo- eob eoc eoe eoi eoo eor eos eot erb erc ere eri ero err ers ert es- esb esc ese esi eso esr ess est etb etc ete eti etj eto etr ets ett ibb ibc ibe ibi ibj ibo ibr ibs ibt icb icc ice ici icj ico icr ics ict ie- iec iee iei iej ier ies iet iib iic iie iii iij iio iir iis iit ijb ijc ije iji ijo ijs ijt io- iob ioc ioe ioi ioj ioo ior ios iot ir- irb irc ire iri irj iro irr irs irt is- isb isc ise isi isj iso isr iss ist itb itc ite iti itj ito its itt j-i jbc jbi jbj jbo jbr jbs jbt jcb jcc jce jci jco jcr jcs jct jeb jec jee jei jej jeo jer jes jet jib jic jie jii jij jio jir jis jit jjb jjc jjj jjr jjs job joc joe joi joj joo jor jos jot jrb jrc jri jro jrr jrs jrt jsb jsc jse jsi jsj jso jsr jss jst jtb jtc jte jti jtr jts jtt o-i ob- obb obc obe obi obj obo obr obs obt oc- ocb occ oci ocj oco ocr ocs oct oeb oec oee oei oeo oer oes oet oib oic oie oii oio oir ois oit ojb ojc oje oji ojo ojs oo- oob ooc ooi ooo oor oos oot or- orb orc ore ori oro orr ors ort os- osb osc ose osi osj oso osr oss ost ot- otb otc ote oti oto otr ots ott rbb rbc rbe rbi rbo rbr rbs rbt rcb rcc rce rci rcj rco rcr rcs rct re- reb rec ree rei reo rer res ret rib ric rie rii rio rir ris rit rjc rjr rob roc roe roi roj roo ror ros rot rrb rrc rri rrr rrs rrt rsb rsc rse rsi rsj rso rsr rss rst rtb rtc rte rti rtj rto rtr rts rtt sbb sbc sbe sbi sbj sbo sbr sbs sbt scb scc sce sci scj sco scr scs sct se- seb sec see sei sej seo ser ses set sib sic sie sii sij sio sir sis sit sjb sjc sje sji sjj sjr sjs sjt sob soc soe soi soj soo sor sos sot sr- srb src sre sri srj sro srr srs srt ss- ssb ssc sse ssi ssj sso ssr sss sst stb stc ste sti stj sto str sts stt tbb tbc tbe tbi tbj tbo tbr tbs tbt tcb tcc tce tci tcj tco tcr tcs tct te- teb tec tee tei tej teo ter tes tet tib tic tie tii tio tir tis tit tjc tje tji tjo tjr tjs to- tob toc toe toi toj too tor tos tot trb trc tre tri tro trr trs trt tsb tsc tse tsi tsj tso tsr tss tst ttb ttc tte tti tto ttr tts ttt