Scrabble dictionary, Word with Friends, search for words, check words

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4 letter words:

pirs6, piso6, pois6, pros6, rips6, risp6, sori4,

3 letter words:

ops5, pir5, pis5, poi5, pos5, pro5, psi5, rip5, sip5, sop5, ios3, iso3, ors3, sir3, sri3,

2 letter words:

op4, pi4, po4, io2, is2, oi2, or2, os2, si2, so2,