C21221212121211331313233313131133132333132313223313231133132322331311121   >>    C2122121212121133131323331313113313233313231322331323113313232233131112   <<    C21221212121211331313233313131133132333132313223313231133132322331311123   >>      C21221212121211331313233313131133132333132313223313231133132322331311122   >>