rcr rct rcu rdb rdc rdd rde rdi rdl rdo rdp rdr rdt rdu re- reb rec red ree rei rel reo rep rer ret reu rib ric rid rie rii ril rio rip rir rit rlc rld rle rli rll rlo rlp rlr rlt rlu rob roc rod roe roi rol roo rop ror rot rou rpb rpc rpd rpe rpi rpl rpo rpp rpr rpt rpu rrb rrc rrd rri rrl rrp rrr rrt rru rtb rtc rtd rte rti rtl rto rtp rtr rtt rtu rub ruc rud rue rui ruo rup rur rut ruu tbb tbc tbd tbe tbi tbl tbo tbp tbr tbt tbu tcb tcc tcd tce tci tcl tco tcp tcr tct tcu tdb tdc tdd tde tdi tdl tdo tdp tdr tdt tdu te- teb tec ted tee tei tel teo tep ter tet teu tib tic tid tie tii til tio tip tir tit tiu tlc tld tle tli tll tlo tlp tlr tlt tlu to- tob toc tod toe toi tol too top tor tot tou tpb tpc tpd tpe tpi tpl tpo tpp tpr tpt tpu trb trc trd tre tri trl tro trp trr trt tru ttb ttc ttd tte tti ttl tto ttp ttr ttt ttu tub tuc tud tue tui tul tuo tup tur tut tuu ubb ubc ube ubi ubl ubo ubp ubr ubt ubu ucb ucc ucd uce uci ucl uco ucp ucr uct ucu udb udc udd ude udi udl udo udp udr udt udu ueb uec ued uee uei uel uep uer uet uib uic uid uie uii uil uio uip uir uit uiu ulb ulc uld ule uli ull ulo ulp ulr ult ulu uob uoc uod uoe uol uoo uop uor uot up- upb upc upd upe upi upo upp upr upt upu ur- urb urc urd ure uri url uro urp urr urt uru utb utc utd ute uti utl uto utp utr utt utu uuc uue uur uut uuu