C1111233131211111211113313331323133313231121211113313331333112331322321   >>    C111123313121111121111331333132313331323112121111331333133311233132232   <<    C1111233131211111211113313331323133313231121211113313331333112331322323   >>      C1111233131211111211113313331323133313231121211113313331333112331322322   >>