C1212121231123232233131323223313233313233313223313132313231333131232321   >>    C121212123112323223313132322331323331323331322331313231323133313123232   <<    C1212121231123232233131323223313233313233313223313132313231333131232323   >>      C1212121231123232233131323223313233313233313223313132313231333131232322   >>