C111123313331323113313331333133313331122112312111113331311332213232321   >>    C11112331333132311331333133313331333112211231211111333131133221323232   <<    C111123313331323113313331333133313331122112312111113331311332213232323   >>      C111123313331323113313331333133313331122112312111113331311332213232322   >>