linds ilnds lnids nlids inlds nilds lidns ildns ldins dlins idlns dilns lndis nldis ldnis dlnis ndlis dnlis indls nidls idnls dinls ndils dnils linsd ilnsd lnisd nlisd inlsd nilsd lisnd ilsnd lsind slind islnd silnd lnsid nlsid lsnid slnid nslid snlid insld nisld isnld sinld nsild snild lidsn ildsn ldisn dlisn idlsn dilsn lisdn ilsdn lsidn slidn isldn sildn ldsin dlsin lsdin sldin dslin sdlin idsln disln isdln sidln dsiln sdiln lndsi nldsi ldnsi dlnsi ndlsi dnlsi lnsdi nlsdi lsndi slndi nsldi snldi ldsni dlsni lsdni sldni dslni sdlni ndsli dnsli nsdli sndli dsnli sdnli indsl nidsl idnsl dinsl ndisl dnisl insdl nisdl isndl sindl nsidl snidl idsnl disnl isdnl sidnl dsinl sdinl ndsil dnsil nsdil sndil dsnil sdnil
Note: these 'words' (valid or invalid) are all the permutations of the word linds. These words are obtained by scrambling the letters in linds.