capacitor in series charging

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Initial state - State 1

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State 2 - discharging during operation (it is not specified when).

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State 3 - Charging again during operation (not specified again, it is specified during operation)

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Hi all,
after posting the 3 pictures,

I've got the following question:

State 1 - Initial state . After starting what will be the Voltage of the capacitor C2
State 2 - Somewhere during operation The C2 is shorted/discharged
State 3 - Somewhere during operation (after fully discharging C2) the C1 is closed and the C2 is open again.

What will be the voltages of C2 in all states

Many thanks . I've got only simulation results.
S1 and S2 are switches (made with  transistors/MOSFETS/whatever)

(S1 is closed, S2 is open) State 1 - C2 (Voltage) =
(S1 is open, S2 is closed) State 2 - C2 (Voltage) =
(S1 is closed, S2 is open) State 3 - C2 (Voltage) =

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Anyone interested ?