C112122131333131323132313221323132313331323131123313233313231323221111   >>    C11212213133313132313231322132313231333132313112331323331323132322111   <<    C112122131333131323132313221323132313331323131123313233313231323221113   >>      C112122131333131323132313221323132313331323131123313233313231323221112   >>