C112233313331323223313331311331323133313331313231333131133112131   >>    C11223331333132322331333131133132313331333131323133313113311213   <<    C112233313331323223313331311331323133313331313231333131133112133   >>      C112233313331323223313331311331323133313331313231333131133112132   >>