type record f4_Type{
    O1_Type    iei,
    O1_Type   tmp
};

type record f5_Type{
    O1_Type    iei,
    O2_Type    tmp
};

type record f6_Type{
    B4_Type    iei,
    B4_Type    tmp
};

type record A{
    B4_Type f1,
    B4_Type f2,
    O4_Type f3,
    O2_Type f4        optional,
    O3_Type f5        optional,
    O1_Type  f6        optional
}with {
    variant "TAG(
        f4, iei = '12'O;
        f5, iei = '34'O;
        f6, iei = '5'H;
    )";
};