When the field effect transistor T becomes conductive again, the first capacitor C1 is effectively in parallel with {HEAD ~ the series circuit} of {TAIL ~ the second diode D2} and the first coil L1 
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When the field effect transistor T becomes conductive again , the first capacitor C1 is effectively in parallel with { HEAD ~ the series circuit } of { TAIL ~ the second diode D2 } and the first coil L1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH