How many such pairs of letters are there in the word SUBCASE each of which has as many letters between them in the word as in the English alphabet? (In both forward and backward directions)
BC
9, 21, 67, 273, 1371, ?
18, 25, 33, 42, 52, 63, ?
1512?9216
1335 737 355 141 47 ?
17 ? 2142 12852 64260 257040
52 60 44 68 ? 76
If 7 16 x 90 171 292
Then, 2x 2 + 1 + x ...
5 ? 205 823 7405 29623
? 190 210 238 274 318
4 12 ? 144 544 2112
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