REPEAT UNTIL X = 1 (
    PRINT X             
    
    
    CLEAR A             
    CLEAR B             
    REPEAT X TIMES (
        INCREASE B
    )
    CLEAR C
    REPEAT B TIMES (
        INCREASE C
        INCREASE A
        INCREASE A
    )
    CLEAR D
    REPEAT X TIMES (
        INCREASE D
    )
    CLEAR X
    REPEAT D TIMES (
        INCREASE X
    )
    
    
)
PRINT X