synch ysnch snych nsych ynsch nysch sycnh yscnh scynh csynh ycsnh cysnh sncyh nscyh scnyh csnyh ncsyh cnsyh yncsh nycsh ycnsh cynsh ncysh cnysh synhc ysnhc snyhc nsyhc ynshc nyshc syhnc yshnc shync hsync yhsnc hysnc snhyc nshyc shnyc hsnyc nhsyc hnsyc ynhsc nyhsc yhnsc hynsc nhysc hnysc sychn yschn scyhn csyhn ycshn cyshn syhcn yshcn shycn hsycn yhscn hyscn schyn cshyn shcyn hscyn chsyn hcsyn ychsn cyhsn yhcsn hycsn chysn hcysn snchy nschy scnhy csnhy ncshy cnshy snhcy nshcy shncy hsncy nhscy hnscy schny cshny shcny hscny chsny hcsny nchsy cnhsy nhcsy hncsy chnsy hcnsy ynchs nychs ycnhs cynhs ncyhs cnyhs ynhcs nyhcs yhncs hyncs nhycs hnycs ychns cyhns yhcns hycns chyns hcyns nchys cnhys nhcys hncys chnys hcnys
Note: these 'words' (valid or invalid) are all the permutations of the word synch. These words are obtained by scrambling the letters in synch.