C1111233131211111211113313331323133313231323211331323133313331121322121   >>    C111123313121111121111331333132313331323132321133132313331333112132212   <<    C1111233131211111211113313331323133313231323211331323133313331121322123   >>      C1111233131211111211113313331323133313231323211331323133313331121322122   >>