C111123313331323113313331333133313331122112312111133131133131112321   >>    C11112331333132311331333133313331333112211231211113313113313111232   <<    C111123313331323113313331333133313331122112312111133131133131112323   >>      C111123313331323113313331333133313331122112312111133131133131112322   >>