C11111333133313232233133313331333133313222321323123131211
  >>
   C1111133313331323223313331333133313331322232132312313121
  <<
   C11111333133313232233133313331333133313222321323123131213
  >>
 
 
 C11111333133313232233133313331333133313222321323123131212
  >>