C1232111311331322331313231323132333132333131323131333132322123121   >>    C123211131133132233131323132313233313233313132313133313232212312   <<    C1232111311331322331313231323132333132333131323131333132322123123   >>      C1232111311331322331313231323132333132333131323131333132322123122   >>