mtr mtt o-i oaa oab oac oad oae oai oal oam oao oar oat ob- oba obb obc obd obe obi obl obm obo obr obt oc- oca ocb occ ocd oci ocl ocm oco ocr oct oda odb odc odd ode odi odl odm odo odr odt oea oeb oec oed oee oei oel oem oeo oer oet oia oib oic oid oie oii oil oim oio oir oit ola olb olc old ole oli oll olm olo olt om- oma omb omc omd ome omi oml omm omo omr omt oo- ooa oob ooc ood ooi ool oom ooo oor oot or- ora orb orc ord ore ori orl orm oro orr ort ot- ota otb otc otd ote oti otl otm oto otr ott ra- raa rab rac rad rae rai ral ram rao rar rat rba rbb rbc rbd rbe rbi rbl rbm rbo rbr rbt rca rcb rcc rcd rce rci rcl rcm rco rcr rct rda rdb rdc rdd rde rdi rdl rdm rdo rdr rdt re- rea reb rec red ree rei rel rem reo rer ret ria rib ric rid rie rii ril rim rio rir rit rla rlc rld rle rli rll rlm rlo rlr rlt rma rmb rmc rmd rme rmi rml rmm rmo rmr rmt roa rob roc rod roe roi rol rom roo ror rot rra rrb rrc rrd rri rrl rrm rrr rrt rta rtb rtc rtd rte rti rtl rtm rto rtr rtt taa tab tac tad tae tai tal tam tao tar tat tba tbb tbc tbd tbe tbi tbl tbm tbo tbr tbt tca tcb tcc tcd tce tci tcl tcm tco tcr tct tda tdb tdc tdd tde tdi tdl tdm tdo tdr tdt te- tea teb tec ted tee tei tel tem teo ter tet tia tib tic tid tie tii til tim tio tir tit tla tlc tld tle tli tll tlm tlo tlr tlt tma tmb tmc tmd tme tmi tml tmm tmo tmr tmt to- toa tob toc tod toe toi tol tom too tor tot tra trb trc trd tre tri trl trm tro trr trt tta ttb ttc ttd tte tti ttl ttm tto ttr ttt