1) ( (x [1, 39] ) ¬ (x [23, 58]) ) ¬ (x [5, 20]) 2) ( (x [1, 39] ) ¬ (x [23, 58]) ) ¬ (x [25, 35]) 3) ( (x [1, 39] ) ¬ (x [23, 58]) ) ¬ (x [40, 55]) 4) ( (x [1, 39] ) ¬ (x [23, 58]) ) ¬ (x [20, 40]) 1520 23 3958 12325 35 3958 12339 40 5558 1202339405