1) have (some) problems doing 2) no use (doing) 3) waste one's time doing 4) have a difficult time doing 5) have a good time doing 6) have a hard time doing 7) have a problem doing 8) have an easy time doing 9) have difficulty doing 10) have fun doing 11) have no difficulty doing 12) have no problem doing 13) spend one's time doing

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