On Figure $1$ is reported the chemical $3D$ structure of histidine, hereafter denoted His.

i$)$ Indicate for this molecule :

the number of ${?}^{1}H$ NMR signals expected at different chemical shifts,

the relative position of the different signals, if there are more than one, in chemical shifts,

the spectral multiplicity expected for any of them,

the order of magnitude of J$-$coupling when occurring.

ii$)$ Indicate for this molecule the number of NMR signals expected at different chemical shifts, and their relative position of the different signals, if there are more than one, in chemical shifts using the different NMR sequences :

a$)$ standard ${?}^{1}H$ decoupled ${?}^{13}C$; b$)$ DEPT$-{135}^{1}H$ decoupled ${?}^{13}C$; c$)$ DEPT$-{90}^{1}H$ decoupled ${?}^{13}C$