C1111233131211111211113313231333133313331323221211111333132313331322221   >>    C111123313121111121111331323133313331333132322121111133313231333132222   <<    C1111233131211111211113313231333133313331323221211111333132313331322223   >>      C1111233131211111211113313231333133313331323221211111333132313331322222   >>