C1111233131211111211113313331333133313331311132113313231333132212313321   >>    C111123313121111121111331333133313331333131113211331323133313221231332   <<    C1111233131211111211113313331333133313331311132113313231333132212313323   >>      C1111233131211111211113313331333133313331311132113313231333132212313322   >>