Question: 2 . Write a regular expression for a string containing any number of X and single pairs of < > and { } which may

2. Write a regular expression for a string containing any number of X
and single pairs of <> and {} which may be nested but not inter-
leaved. For example these strings are allowed:
XXXX
X{X}XX{X}XX
But these are not allowed:
XXX>XX
XXXX}XX

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