h-ii hhhh hihi hiho hiht hiit hiri hiro hirt hiti hito hitt hoho hoir hoit hoix hoor hoot hoox hori horo horr hort hoth hoti hoto hotr hott hrit htoh httr ihit iiht iiii iiio iiit iioi iioo iitr iitt ioii ioio ioit iooi iooo iori ioto iri- irio irix iroh irri irti itoh itoi itoo itor itri itto ixxi ohhi ohho ohio ohoh ohto oiii oirt oiti ooho oooh oooo oort ori- orio orit orix oro- oror orot orri orro orth orto otho othr otit oto- otoh otoo otor otro otti otto oxi- oxo- oxox oxxo rhio rhoh riho riht riot riri rith riti rito ritt rixo rohr roio roir roit rooi roor root roox rori roro rort roth roti roto rotr rott roxo rrrr thi- thio thir thoo thor thot thri thro thtr tiht tiit tiri tiro tirr tith titi tito titt tixt tohi toho toit tooh toor toot tori toro torr tort torx toth toti toto totr tott tox- toxi toxo toxt tri- trio trit trix troi troo trot trox trtr tttt txii txtr xhoi xhri xiii xito xixi xoro xoth xoxo xtro xxii xxix xxxi xxxo xxxx