C1111233131211111211113313331333133313331313331333132313223332321   >>    C111123313121111121111331333133313331333131333133313231322333232   <<    C1111233131211111211113313331333133313331313331333132313223332323   >>      C1111233131211111211113313331333133313331313331333132313223332322   >>