C22212323232133313113313331333132313331311332313233232233212213221   >>    C2221232323213331311331333133313231333131133231323323223321221322   <<    C22212323232133313113313331333132313331311332313233232233212213223   >>      C22212323232133313113313331333132313331311332313233232233212213222   >>