In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

Q: SJIkEibGrqcrOBgGjYjJc, EervOGrqcrOBgGJZyx

A: GrqcrOBgG
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Q: ilgSzrcUKLTNLJbMKMKSt, hFXIuUKLTNLJbMKWxSCkDjY

A: UKLTNLJbMK
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Q: xnYlqXHuyJCtyoWCkHbT, BzOZHuyJCtyYfJE

A:
HuyJCty
****