C1313231312311331322331313331323113313233313232222331323133313233232211   >>    C131323131231133132233131333132311331323331323222233132313331323323221   <<    C1313231312311331322331313331323113313233313232222331323133313233232213   >>      C1313231312311331322331313331323113313233313232222331323133313233232212   >>