C112122131333131323132313221323132313331323131123313233313223331   >>    C11212213133313132313231322132313231333132313112331323331322333   <<    C112122131333131323132313221323132313331323131123313233313223333   >>      C112122131333131323132313221323132313331323131123313233313223332   >>