Reverse three-letter overlapping blocks – UGC NET Question

Each term is a block of three consecutive letters arranged in reverse order, and the starting letters move backward by one. ZYX uses 26 to 24, YXW uses 25 to 23, XWV uses 24 to 22 and WVU uses 23 to 21. The next starting letter is V at position 22 moving back to U and T, so the reversed block is VUT. Thus VUT maintains both the backward shift in the starting letter and the internal reverse order.

Option A:
Option A is correct because it starts at V, exactly one position before W, and lists the next two letters U and T in descending order. This matches the pattern of overlapping reversed triples and keeps the shift of the starting letter constant. It also ensures that all letters inside the group are consecutive in reverse alphabetical order.

Option B:
Option B, UTS, reverses the internal positions differently and does not use V, which should be the starting letter according to the pattern. It also disrupts the way the groups overlap with their neighbours. Since it does not follow the same mechanism of backward stepping, UTS is not the correct continuation.

Option C:
Option C, TSV, rearranges the letters and fails to present a clean three letter consecutive block in reverse order. It also does not arise from shifting the starting letter back by one from W. Because it breaks both the structural and positional rules, TSV is inconsistent with the series.

Option D:
Option D, YZW, introduces letters that are not consecutive in the correct reversed manner following WVU. It also moves back to Y instead of correctly progressing to V. As a result, YZW does not align with the established pattern.