C112122131333131323132313221323132313331323131123313231322112111   >>    C11212213133313132313231322132313231333132313112331323132211211   <<    C112122131333131323132313221323132313331323131123313231322112113   >>      C112122131333131323132313221323132313331323131123313231322112112   >>