C1111233131211111211113313331323133313231333133312111111331322331323222221   >>    C111123313121111121111331333132313331323133313331211111133132233132322222   <<    C1111233131211111211113313331323133313231333133312111111331322331323222223   >>      C1111233131211111211113313331323133313231333133312111111331322331323222222   >>