export tag A
export tag B
export tag C

test T1:
    guard True

test T2:
    guard True

test A1:
    tag: A
    guard True

test A2:
    tag: A
    guard True

test B1:
    tag: B
    guard True

test B2:
    tag: B
    guard True

test C1:
    tag: C
    guard True

test C2:
    tag: C
    guard True

test BC:
    tag: B
    tag: C
    guard True