fstsplit0xnilfstsplitsnnilnilfstsplitsnconshtconshfstsplitntsndsplit0xxsndsplitsnnilnilsndsplitsnconshtsndsplitntemptyniltrueemptyconshtfalseleq0mtrueleqsn0falseleqsnsmleqnmlengthnil0lengthconshtslengthtappnilxxappconshtxconshapptxmap_fpidnilnilmap_fpidconshtappfpidhmap_fpidtheadconshthtailconshttringst_1in_2st_2in_3st_3mif_1st_1in_2st_2in_3st_3memptyfstsplitmst_1if_1st_1in_2st_2in_3st_3mfalseringsndsplitmst_1consfstsplitmst_1in_2st_2in_3st_3mringst_1in_2st_2in_3st_3mif_2st_1in_2st_2in_3st_3mleqmlengthst_2if_2st_1in_2st_2in_3st_3mtrueif_3st_1in_2st_2in_3st_3memptyfstsplitmst_2if_3st_1in_2st_2in_3st_3mfalseringst_1in_2sndsplitmst_2consfstsplitmst_2in_3st_3mif_2st_1in_2st_2in_3st_3mfalseif_4st_1in_2st_2in_3st_3memptyfstsplitmappmap_ftwoheadin_2st_2if_4st_1in_2st_2in_3st_3mfalseringst_1tailin_2sndsplitmappmap_ftwoheadin_2st_2consfstsplitmappmap_ftwoheadin_2st_2in_3st_3mringst_1in_2st_2in_3st_3mif_5st_1in_2st_2in_3st_3memptymap_ftwoheadin_2if_5st_1in_2st_2in_3st_3mtrueringst_1tailin_2st_2in_3st_3mringst_1in_2st_2in_3st_3mif_6st_1in_2st_2in_3st_3mleqmlengthst_3if_6st_1in_2st_2in_3st_3mtrueif_7st_1in_2st_2in_3st_3memptyfstsplitmst_3if_7st_1in_2st_2in_3st_3mfalseringst_1in_2st_2in_3sndsplitmst_3mif_6st_1in_2st_2in_3st_3mfalseif_8st_1in_2st_2in_3st_3memptyfstsplitmappmap_fthreeheadin_3st_3if_8st_1in_2st_2in_3st_3mfalseringst_1in_2st_2tailin_3sndsplitmappmap_fthreeheadin_3st_3mringst_1in_2st_2in_3st_3mif_9st_1in_2st_2in_3st_3memptymap_fthreeheadin_3if_9st_1in_2st_2in_3st_3mtrueringst_1in_2st_2tailin_3st_3mfstsplit200nil0s1cons2sndsplit2empty1true0false0leq2length1app2map_f2f2head1tail1ring6if_17if_27if_37if_47two0if_57if_67if_77if_87three0if_97FULL./TRS/AProVE/AAECC-ring.trs