C1111233133313231133133313231333132313231323211331323133313223121   >>    C111123313331323113313331323133313231323132321133132313331322312   <<    C1111233133313231133133313231333132313231323211331323133313223123   >>      C1111233133313231133133313231333132313231323211331323133313223122   >>