C1313231312311331322331313331323113313233313232222331323133313221321   >>    C131323131231133132233131333132311331323331323222233132313331322132   <<    C1313231312311331322331313331323113313233313232222331323133313221323   >>      C1313231312311331322331313331323113313233313232222331323133313221322   >>