limiter circuit

the requirements are, The input signal of the limiter Vin is a sinewave having a maximum amplitude of 10V and a frequency of 60Hz. The input signal Vin is fed to the circuit through a resistor 500 ohm. and if Vin<=-9v , Vout = 10v and -9v<=Vin<=6v , 0v<=Vout<=10v and Vin>=6v , Vout = 10v are...

I have already worked on it but I can't seem to make it precisely as it should be. So the problem asks to create a circuit according to the transfer characteristic of the soft limiter shown in the figure below (blah). I managed to create a circuit (blah2) but it doesn't work because I need...