C31232233133313221211113313331323133313233313233313231333132313222221   >>    C3123223313331322121111331333132313331323331323331323133313231322222   <<    C31232233133313221211113313331323133313233313233313231333132313222223   >>      C31232233133313221211113313331323133313233313233313231333132313222222   >>