C1111233131211111211113313231333133313331323331333133313222321321   >>    C111123313121111121111331323133313331333132333133313331322232132   <<    C1111233131211111211113313231333133313331323331333133313222321323   >>      C1111233131211111211113313231333133313331323331333133313222321322   >>