C12313211232233312111111312111133133313331323133313331122332321133111321321   >>    C1231321123223331211111131211113313331333132313331333112233232113311132132   <<    C12313211232233312111111312111133133313331323133313331122332321133111321323   >>      C12313211232233312111111312111133133313331323133313331122332321133111321322   >>