C1212121231123232233131323223313233313233313223313231323232131111   >>    C121212123112323223313132322331323331323331322331323132323213111   <<    C1212121231123232233131323223313233313233313223313231323232131113   >>      C1212121231123232233131323223313233313233313223313231323232131112   >>