maths amths mtahs tmahs atmhs tamhs mahts amhts mhats hmats ahmts hamts mthas tmhas mhtas hmtas thmas htmas athms tahms ahtms hatms thams htams matsh amtsh mtash tmash atmsh tamsh masth amsth msath smath asmth samth mtsah tmsah mstah smtah tsmah stmah atsmh tasmh astmh satmh tsamh stamh mahst amhst mhast hmast ahmst hamst masht amsht msaht smaht asmht samht mhsat hmsat mshat smhat hsmat shmat ahsmt hasmt ashmt sahmt hsamt shamt mthsa tmhsa mhtsa hmtsa thmsa htmsa mtsha tmsha mstha smtha tsmha stmha mhsta hmsta mshta smhta hsmta shmta thsma htsma tshma sthma hstma shtma athsm tahsm ahtsm hatsm thasm htasm atshm tashm asthm sathm tsahm stahm ahstm hastm ashtm sahtm hsatm shatm thsam htsam tsham stham hstam shtam
Note: these 'words' (valid or invalid) are all the permutations of the word maths. These words are obtained by scrambling the letters in maths.