C31313132333131133132233132233132213233313233313221333132322132313111   >>    C3131313233313113313223313223313221323331323331322133313232213231311   <<    C31313132333131133132233132233132213233313233313221333132322132313113   >>      C31313132333131133132233132233132213233313233313221333132322132313112   >>