-er -ic b-u bbb bbc bbe bbi bbo bbr bbu bcb bcc bce bci bco bcr bcu bcv bcz be- beb bec bee bei beo ber beu bev bez bi- bib bic bie bii bio bir biu biv biz bob boc boe boi boo bor bou bov boz brb bre bri bro brr bru brv brz bub buc bue bui buo bur buu buz bvb bvc bve bvi bvo bvr bvu bvv bze bzo bzr bzu bzz c-- cbb cbc cbe cbi cbo cbr cbu cbv cbz ccb ccc cce cci cco ccr ccu ccv ccz ce- ceb cec cee cei ceo cer ceu cev cez ci- cib cic cie cii cio cir ciu civ co- cob coc coe coi coo cor cou cov coz crb crc cre cri cro crr cru crv crz cub cuc cue cui cuo cur cuu cuv cuz cvb cvc cve cvi cvo cvr cvu cvv cvz cz- czc cze czo ebb ebc ebe ebi ebo ebr ebu ebv ec- ecb ecc ece eci eco ecr ecu ecv eeb eec eee eeo eer eev eib eic eie eii eio eir eiu eiv eo- eob eoc eoe eoi eoo eor eou erb erc ere eri ero err eru erv erz eu- eub euc eue eui eur euv evb evc eve evi evo evr evv eze ezo ezr ezz i-v ibb ibc ibe ibi ibo ibr ibu ibv ibz icb icc ice ici ico icr icu icv icz ie- iec iee iei ier iev iib iic iie iii iio iir iiu io- iob ioc ioe ioi ioo ior iou iov ir- irb irc ire iri iro irr iru irv iu- iub iuc iue iui iur iuz ivb ivc ive ivi ivo ivr ivu ivv ize izi izo izu izz o-i ob- obb obc obe obi obo obr obu obv oc- ocb occ oci oco ocr ocu ocv ocz oeb oec oee oei oeo oer oib oic oie oii oio oir oiu oiv oiz oo- oob ooc ooi ooo oor oov or- orb orc ore ori oro orr oru orv orz ou- ouc oue oui ouo our ov- ovb ovc ove ovi ovo ovv oze ozo ozu ozz rbb rbc rbe rbi rbo rbr rbu rcb rcc rce rci rco rcr rcu rcv re- reb rec ree rei reo rer reu rev rez rib ric rie rii rio rir riv riz rob roc roe roi roo ror rou rov roz rrb rrc rri rrr rru rub ruc rue rui ruo rur ruu ruv ruz rvb rvc rve rvi rvo rvr rvu rvv rzb rze rzo ubb ubc ube ubi ubo ubr ubu ubv ucb ucc uce uci uco ucr ucu ucv ueb uec uee uei uer uib uic uie uii uio uir uiu uob uoc uoe uoo uor ur- urb urc ure uri uro urr uru urz uuc uue uur uuu uvb uvc uve uvo uvu uvv uzb uzi uzo uzu v-e vbc vbi vbo vbr vbv vbz vcc vce vci vco vcr vcu veb vec vee vei veo ver veu vez vi- vib vic vie vii vio vir viu viv viz vob voc voe voi voo vor vou vov voz vrb vrc vre vri vrr vru vue vur vuv vuz vvb vvc vvi vvo vvr vvv vvz zbb zbc zbr zbv zce zco zeb zec zee zeo zer zev zez zib zie zio zir ziv ziz zo- zob zoc zoe zoi zoo zor zou zro zub zuc zui zur zuz zvi zzr zzz