"Play" is present tense. The past perfect tense would be "had played".
The past perfect tense is "had played"
The past tense of "exist" is "existed." The past perfect tense is "had existed."
The past tense of "bleed" is "bled." The past perfect tense of "bleed" is "had bled."
The past tense of sit is sat. The past perfect tense of sit is had sat.
The past perfect tense is had set.
The past perfect tense of "learn" is "had learned."
The past perfect tense is had bathed.
The past perfect tense is had rung.
The past perfect tense of "submit" is "had submitted."
The past perfect tense of "confront" is "had confronted."
The past perfect tense is had burned.