C12313211232233312111111312111133133313331323133323232322311233131   >>    C1231321123223331211111131211113313331333132313332323232231123313   <<    C12313211232233312111111312111133133313331323133323232322311233133   >>      C12313211232233312111111312111133133313331323133323232322311233132   >>