C1111233131211111211113313331323133313231323211331323132313232212331   >>    C111123313121111121111331333132313331323132321133132313231323221233   <<    C1111233131211111211113313331323133313231323211331323132313232212333   >>      C1111233131211111211113313331323133313231323211331323132313232212332   >>