Revert "5.model"

This reverts commit 498af0935d466797dade5b05543f0e546dda8697.
Revert "4.Czwarty mode"

This reverts commit 86183b5d818c089b011989d40ff4c27ea52f1a67.
Revert "3.Trzeci model"

This reverts commit 4b3f71bcb84707e54f7c40cac481a1adb58f555f.
Revert "2.Drugi model"

This reverts commit 51a8a6df554158b4af4d355429fbe3574001d550.
Revert "1.Pierwszy model"

This reverts commit c419953da50f8e296d0f5490e68a305ce9bef380.