ombo omim omin omio omit omn- omni omo- omoi omon omoo omor omri omro ongi ongo onir onit onni onno onon onor ont- onti onto oobi oont oooo oort ootb orbb orbi orbo orgn orgo ori- orig orin orio orit orko ormn ormo orni orno oro- orok orom oron oror orot orri orro orto otin otit oto- otog otok oton otoo otor otro otti otto rbbb rbbr rbmk rgbi rgit rgtr rib- ribo rigg rigi rigo riin riki rikk rimi rimm rimo ring rink rinn rino riom rion riot riri riti rito ritt rmon rmrg rnbr rnin rnnt rnot rob- robb robi robo robt rogg rogi rogo roig roik roin roio roir roit roki rokk roko rokr romb romi romk romm romo rong roni ronk rono ront roob roog rooi rook room roon roor root rori rork roro rort rotg roti rotk rotn roto rotr rott rrkm rrrr rtkg rtkn rtmi t-mo tbit tbrb tibi tigi tigm tigr tiit tiki tiko timi timm timn timo ting tini tink tinn tino tint tion tirb tiri tiro tirr titi tito titt tkkg tkon tmbg tmbr tmmk tmnt tmro tmtt tnik tnmk tobi tobo tobt togo togr togt toit toki toko tomb tomg tomi tomm tomo tomt tonb tong toni tonk tonn tono took toom toon toor toot torg tori tork torm torn toro torr tort toti totm toto totr tott tri- trib trig trik trim trin trio trit trmb trmi trmk trng trno trog troi trom tron troo trot trtr ttbb ttim ttkg tton tttt