C3123223313331322121111331333133313231333132333133313231323223213231221   >>    C312322331333132212111133133313331323133313233313331323132322321323122   <<    C3123223313331322121111331333133313231333132333133313231323223213231223   >>      C3123223313331322121111331333133313231333132333133313231323223213231222   >>