What letters are used for the resistors, capacitors and inductors on the PCB?

Capacitance is represented by C, diode is represented by D, resistance is represented by R, power capacitor ce, forward rotation button SBF, reverse rotation button SBR, stop button SBS, emergency button SBE, test button SBT, reset button s R, limit switch SQ, proximity switch SQP, manual control switch SH, time control switch SK, liquid level control switch SL, humidity control switch SM, pressure control switch SP, speed control switch SS, Temperature control switch, auxiliary switch st, voltmeter changeover switch SV, ammeter changeover switch SA, rectifier U, SCR UR, rectifier VC with power supply as control loop, inverter UF, converter UC, inverter UI, motor M and asynchronous motor MA.