C31232233133313221211113313331333132313331333133313223313231231   >>    C3123223313331322121111331333133313231333133313331322331323123   <<    C31232233133313221211113313331333132313331333133313223313231233   >>      C31232233133313221211113313331333132313331333133313223313231232   >>