C111123313331323113313331333133313231323133312111113331311111232321   >>    C11112331333132311331333133313331323132313331211111333131111123232   <<    C111123313331323113313331333133313231323133312111113331311111232323   >>      C111123313331323113313331333133313231323133312111113331311111232322   >>