C1111233131211111211113313331333133313231323331322132313231323132323321   >>    C111123313121111121111331333133313331323132333132213231323132313232332   <<    C1111233131211111211113313331333133313231323331322132313231323132323323   >>      C1111233131211111211113313331333133313231323331322132313231323132323322   >>