Generate a multiplication table for a given number up to a specified limit. Return a list of strings representing each line of the table.

Examples:

Input: num = 5, tableSize = 3 Output: ['5 x 1 = 5', '5 x 2 = 10', '5 x 3 = 15'] Explanation: The multiplication table for 5 with 3 rows is returned as a list of strings Input: num = 12, tableSize = 5 Output: ['12 x 1 = 12', '12 x 2 = 24', '12 x 3 = 36', '12 x 4 = 48', '12 x 5 = 60'] Explanation: The multiplication table for 12 with 5 rows is returned as a list of strings
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