CHOICE { null NULL } CHOICE { null NULL, ... } CHOICE { one NULL, two [2] NULL } CHOICE { one NULL, two [2] NULL, ... } CHOICE { one NULL, ..., two [2] NULL } CHOICE { one NULL, two [2] NULL, ..., three [3] NULL } CHOICE { one NULL, ..., two [2] NULL, three [3] NULL } CHOICE { one BOOLEAN, ..., two [2] BOOLEAN, three [3] BOOLEAN } CHOICE { one BOOLEAN, two BIT STRING (SIZE(1..3)) } CHOICE { ..., one BOOLEAN, two BIT STRING (SIZE(1..3)) } CHOICE { one NULL, two BOOLEAN, three BIT STRING (SIZE(1..3)) }