C213211331333131212111133133313231333132313331322331323131121311   >>    C21321133133313121211113313331323133313231333132233132313112131   <<    C213211331333131212111133133313231333132313331322331323131121313   >>      C213211331333131212111133133313231333132313331322331323131121312   >>