C31313132333131133132233132233132213233313233313221333132323321   >>    C3131313233313113313223313223313221323331323331322133313232332   <<    C31313132333131133132233132233132213233313233313221333132323323   >>      C31313132333131133132233132233132213233313233313221333132323322   >>