for the bit stream 01001110 sketck the waveforms for each of the signal encoding formats. assume that the signal level for the preceding bit for NRZI was high; the most recent preceding 1 bit (AMI) has a negative voltage; and the most recent preceding 0 bit (pseudoternary) has a negative voltage. NRZ_L , NRZI , bipolar_AMI , pseudoternary , manchester , differential manchester ,