"abcd" SW "ab"
1
   "abcd" SW "cd"
0
   "abcd" EW "ab"
0
   "abcd" EW "cd"
1
   "abcd" Contains "bb"
0
   "abcd" Contains "ab"
1
   "abcd" Contains "bc"
1
   "abab" Contains "ab"
1
   "abab" Locs "ab"
⟨ 0 2 ⟩