( a b c -- b c a )
CODE ROT
    HL POPqq,       ( C )
    DE POPqq,       ( B )
    BC POPqq,       ( A )
    chkPS,
    DE PUSHqq,      ( B )
    HL PUSHqq,      ( C )
    BC PUSHqq,      ( A )
;CODE