PRINT X
REPEAT X TIMES (
    CLEAR A
    REPEAT X TIMES (
        INCREASE A
    )
    CLEAR B
    REPEAT A TIMES (
        INCREASE B
    )
    PRINT X
    CLEAR C
    REPEAT X TIMES (
        INCREASE C
    )
    CLEAR A
    REPEAT X TIMES (
        INCREASE A
    )
    CLEAR B
    CLEAR D
    INCREASE D
    INCREASE D
    REPEAT D TIMES (
        INCREASE B
    )
)