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... FRACTERON ... (4 elements)

... FRACTERO ... (4 elements)

DIFFRACTERONS · DIFFRACTERONT · REFRACTERONS · REFRACTERONT

... RACTERON ... (14 elements)

CONTRACTERONS · CONTRACTERONT · DECONTRACTERONS · DECONTRACTERONT · DIFFRACTERONS · DIFFRACTERONT · REFRACTERONS · REFRACTERONT · RETRACTERONS · RETRACTERONT

... EFRACTERON ... (2 elements)

REFRACTERONS · REFRACTERONT

... FFRACTERON ... (2 elements)

DIFFRACTERONS · DIFFRACTERONT

... FRACTERONS ... (2 elements)

DIFFRACTERONS · REFRACTERONS

... FRACTERONT ... (2 elements)

DIFFRACTERONT · REFRACTERONT