Mysterious
SMUIS RISM MOREY OYEROS
URIEST SUMOUSER ROYS MISM'S
TISTY OUTER'S STIS MUSEY
EMOUSY SMIT'S TROUS TRIST
MOIST UMIE YOMES MOYISM
ROURMIR YEOS ITSU RIMEOM
RIMOISE ESTEROS SUITER TRISM
TRUISES MUSTRE TOUS SORSE
SERMIR ISMUIT STOUS EMIT
ROSETOUS SOUSY YOUROUSY STES
TISE TOURY MOISER STORYITS
MISERS RIMERIO SYRTIES SIMY
MOSSU MUSIETY YORY STOURT
OYSOS TRUTE'S SUIS RUERY
ORETY TUIT RUST TRISY
TRUTI SUITEY SYRTIER MISM
ROUSY TROTS MERYISE SOU'RE
SUERIO OUSE SERUIS TROUSER
YOUTER OSTRIE EMOIS UMITERS
MOURS STERY UTERY EMISSOR
ORES ISM'S SOUS EMORYIST
TORES REMUS SOURIMES TRUMORY
YESIES EURMISM SITERY SERS
MIST MUSIERS MOISMY ROSSY
MOISM MOSERIO MUIS OYERUITS
What next?