C312312111133131212111133133313231333133313331331122332211
  >>
   C31231211113313121211113313331323133313331333133112233221
  <<
   C312312111133131212111133133313231333133313331331122332213
  >>
 
 
 C312312111133131212111133133313231333133313331331122332212
  >>