paris apris prais rpais arpis rapis pairs apirs piars ipars aiprs iaprs prias rpias piras ipras ripas irpas arips raips airps iarps riaps iraps parsi aprsi prasi rpasi arpsi rapsi pasri apsri psari spari aspri sapri prsai rpsai psrai sprai rspai srpai arspi raspi asrpi sarpi rsapi srapi paisr apisr piasr ipasr aipsr iapsr pasir apsir psair spair aspir sapir pisar ipsar psiar spiar ispar sipar aispr iaspr asipr saipr isapr siapr prisa rpisa pirsa iprsa ripsa irpsa prsia rpsia psria spria rspia srpia pisra ipsra psira spira ispra sipra rispa irspa rsipa sripa isrpa sirpa arisp raisp airsp iarsp riasp irasp arsip rasip asrip sarip rsaip sraip aisrp iasrp asirp sairp isarp siarp risap irsap rsiap sriap israp sirap
Note: these 'words' (valid or invalid) are all the permutations of the word paris. These words are obtained by scrambling the letters in paris.