C1212121231123232233131323223313232213231333131122233131323132333131   >>    C121212123112323223313132322331323221323133313112223313132313233313   <<    C1212121231123232233131323223313232213231333131122233131323132333133   >>      C1212121231123232233131323223313232213231333131122233131323132333132   >>