When the “field” was applied on CC, the three peaks acquired the same amount of phase. These phases were the same as $\theta$ given by $Z_{\rm C}(\theta)$ within an experimental error. See the good agreement between the measured and calculated spectra. On the other hand, the acquired phases were different at different peaks when the “field” was applied on CSs. The central peak does not acquire any phase as one can see from the fact that it is symmetric regardless of the $\theta$ values. The two side peaks acquire $\pm 2 \theta $: The $+$ sign is for the left peak and the $-$ sign for the right. Again, we obtain reasonably good agreement between the measured and calculated spectra, although the measured spectra are not as sharp as the calculated ones. All calculated spectra were obtained with the measured coupling constant $J^{(\rm CC, CSs)}$ and two fitting parameters: One is $T_2 = 0.1$ s and the other is the amplitude. The value of $T_2$ is quite reasonable from the FID signal measurements. Therefore, the amplitude is actually the only fitting parameter.

![(Color online) The spectra as a function of $\theta$ (the strength of the “magnetic field”) when all H 