C1212121231123232233131323223313233313233313223313231323131123313233321   >>    C121212123112323223313132322331323331323331322331323132313112331323332   <<    C1212121231123232233131323223313233313233313223313231323131123313233323   >>      C1212121231123232233131323223313233313233313223313231323131123313233322   >>