____XYZ__X__YZ__XnilX__nilXXU11ttU12ttU12ttttisNePal__I__PIU11ttactivateXX__2nil0U111tt0U121isNePal1activate1FULL./TRS/TRCSR/PALINDROME_nosorts-noand_FR.trs./TRS/TRCSR/PALINDROME_nosorts-noand_Z.trs