-er -ol b-u bbb bbc bbd bbe bbl bbo bbr bbt bbu bcb bcc bcd bce bcl bco bcr bct bcu bdb bdc bdd bde bdl bdo bdr bdt bdu be- beb bec bed bee bel beo ber bet beu blb blc bld ble bll blo blr blt blu bob boc bod boe bol boo bor bot bou brb brd bre brl bro brr brt bru btb btc btd bte btl bto btr btt btu bub buc bud bue bul buo bur but buu c-- cbb cbc cbd cbe cbl cbo cbr cbt cbu ccb ccc ccd cce ccl cco ccr cct ccu cdb cdc cdd cde cdl cdo cdr cdt cdu ce- ceb cec ced cee cel ceo cer cet ceu cl- clb clc cld cle cll clo clr clt clu co- cob coc cod coe col coo cor cot cou crb crc crd cre crl cro crr crt cru ctb ctc ctd cte ctl cto ctr ctt ctu cub cuc cud cue cul cuo cur cut cuu dbb dbc dbd dbe dbl dbo dbr dbt dbu dcb dcc dcd dce dcl dco dcr dct dcu ddb ddc ddd dde ddl ddo ddr ddt ddu de- deb dec ded dee del deo der det deu dl- dlb dlc dld dle dll dlo dlr dlt dlu dob doc dod doe dol doo dor dot dou drb drc drd dre drl dro drr drt dru dtb dtc dtd dte dtl dto dtr dtt dtu dub duc dud due dul duo dur dut ebb ebc ebd ebe ebl ebo ebr ebt ebu ec- ecb ecc ecd ece ecl eco ecr ect ecu ed- edb edc edd ede edl edo edr edt edu eeb eec eed eee eel eeo eer eet elb elc eld ele ell elo elr elt elu eo- eob eoc eod eoe eol eoo eor eot eou erb erc erd ere erl ero err ert eru etb etc etd ete etl eto etr ett etu eu- eub euc eud eue eul eur eut lbb lbc lbd lbe lbl lbo lbr lbt lbu lcb lcc lcd lce lcl lco lcr lct lcu ldb ldc ldd lde ldl ldo ldr ldt ldu leb lec led lee lel leo ler let leu llb llc lld lle lll llo llr llt llu lob loc lod loe lol loo lor lot lou lrb lrc lrd lro lrr lrt lru ltb ltc ltd lte ltl lto ltr ltt ltu lub luc lud lue lul luo lur lut luu ob- obb obc obd obe obl obo obr obt obu oc- ocb occ ocd ocl oco ocr oct ocu odb odc odd ode odl odo odr odt odu oeb oec oed oee oel oeo oer oet olb olc old ole oll olo olt olu oo- oob ooc ood ool ooo oor oot or- orb orc ord ore orl oro orr ort oru ot- otb otc otd ote otl oto otr ott otu ou- ouc oud oue oul ouo our out rbb rbc rbd rbe rbl rbo rbr rbt rbu rcb rcc rcd rce rcl rco rcr rct rcu rdb rdc rdd rde rdl rdo rdr rdt rdu re- reb rec red ree rel reo rer ret reu rlc rld rle rll rlo rlr rlt rlu rob roc rod roe rol roo ror rot rou rrb rrc rrd rrl rrr rrt rru rtb rtc rtd rte rtl rto rtr rtt rtu rub ruc rud rue ruo rur rut ruu tbb tbc tbd tbe tbl tbo tbr tbt tbu tcb tcc tcd tce tcl tco tcr tct tcu tdb tdc tdd tde tdl tdo tdr tdt tdu te- teb tec ted tee tel teo ter tet teu tlc tld tle tll tlo tlr tlt tlu to- tob toc tod toe tol too tor tot tou trb trc trd tre trl tro trr trt tru ttb ttc ttd tte ttl tto ttr ttt ttu tub tuc tud tue tul tuo tur tut tuu ubb ubc ube ubl ubo ubr ubt ubu ucb ucc ucd uce ucl uco ucr uct ucu udb udc udd ude udl udo udr udt udu ueb uec ued uee uel uer uet ulb ulc uld ule ull ulo ulr ult ulu uob uoc uod uoe uol uoo uor uot ur- urb urc urd ure url uro urr urt uru utb utc utd ute utl uto utr utt utu uuc uue uur uut uuu