-er -ic -ji bbb bbc bbe bbi bbo bbr bbt bcb bcc bce bci bcj bco bcr bct bcv be- beb bec bee bei beo ber bet bev bi- bib bic bie bii bij bio bir bit biv bjc bji bjj bjr bjt bob boc boe boi boj boo bor bot bov brb bre bri brj bro brr brt brv btb btc bte bti bto btr btt btv bvb bvc bve bvi bvo bvr bvt bvv c-- c-j cbb cbc cbe cbi cbj cbo cbr cbt cbv ccb ccc cce cci ccj cco ccr cct ccv ce- ceb cec cee cei cej ceo cer cet cev ci- cib cic cie cii cij cio cir cit civ cjb cjc cjr co- cob coc coe coi coj coo cor cot cov crb crc cre cri crj cro crr crt crv ctb ctc cte cti cto ctr ctt ctv cvb cvc cve cvi cvo cvr cvt cvv ebb ebc ebe ebi ebj ebo ebr ebt ebv ec- ecb ecc ece eci ecj eco ecr ect ecv eeb eec eee eeo eer eet eev eib eic eie eii eij eio eir eit eiv ejc eji ejo ejt eo- eob eoc eoe eoi eoo eor eot erb erc ere eri ero err ert erv etb etc ete eti etj eto etr ett etv evb evc eve evi evo evr evt evv i-v ibb ibc ibe ibi ibj ibo ibr ibt ibv icb icc ice ici icj ico icr ict icv ie- iec iee iei iej ier iet iev iib iic iie iii iij iio iir iit ijb ijc ije iji ijo ijt ijv io- iob ioc ioe ioi ioj ioo ior iot iov ir- irb irc ire iri irj iro irr irt irv itb itc ite iti itj ito itt itv ivb ivc ive ivi ivo ivr ivt ivv j-i jbc jbi jbj jbo jbr jbt jcb jcc jce jci jco jcr jct jeb jec jee jei jej jeo jer jet jib jic jie jii jij jio jir jit jiv jjb jjc jjj jjr job joc joe joi joj joo jor jot jrb jrc jri jro jrr jrt jtb jtc jte jti jtr jtt jtv jvb jvc jvi jvt o-i ob- obb obc obe obi obj obo obr obt obv oc- ocb occ oci ocj oco ocr oct ocv oeb oec oee oei oeo oer oet oib oic oie oii oio oir oit oiv ojb ojc oje oji ojo oo- oob ooc ooi ooo oor oot oov or- orb orc ore ori oro orr ort orv ot- otb otc ote oti oto otr ott otv ov- ovb ovc ove ovi ovo ovv rbb rbc rbe rbi rbo rbr rbt rcb rcc rce rci rcj rco rcr rct rcv re- reb rec ree rei reo rer ret rev rib ric rie rii rio rir rit riv rjc rjr rob roc roe roi roj roo ror rot rov rrb rrc rri rrr rrt rtb rtc rte rti rtj rto rtr rtt rtv rvb rvc rve rvi rvo rvr rvt rvv tbb tbc tbe tbi tbj tbo tbr tbt tbv tcb tcc tce tci tcj tco tcr tct tcv te- teb tec tee tei tej teo ter tet tev tib tic tie tii tio tir tit tiv tjc tje tji tjo tjr to- tob toc toe toi toj too tor tot tov trb trc tre tri tro trr trt trv ttb ttc tte tti tto ttr ttt ttv tvb tvc tve tvi tvo tvr tvt v-e vbc vbi vbo vbr vbv vcc vce vci vco vcr vct veb vec vee vei veo ver vet vi- vib vic vie vii vij vio vir vit viv vob voc voe voi voo vor vot vov vrb vrc vre vri vrr vrt vtb vtc vte vti vto vtr vtt vtv vvb vvc vvi vvo vvr vvt vvv