C23131111222331311211331323111133132233132313331323331323133313223221   >>    C2313111122233131121133132311113313223313231333132333132313331322322   <<    C23131111222331311211331323111133132233132313331323331323133313223223   >>      C23131111222331311211331323111133132233132313331323331323133313223222   >>